CN102236202A - Embedded optical touch liquid crystal display and manufacturing method thereof - Google Patents
Embedded optical touch liquid crystal display and manufacturing method thereof Download PDFInfo
- Publication number
- CN102236202A CN102236202A CN2010101711869A CN201010171186A CN102236202A CN 102236202 A CN102236202 A CN 102236202A CN 2010101711869 A CN2010101711869 A CN 2010101711869A CN 201010171186 A CN201010171186 A CN 201010171186A CN 102236202 A CN102236202 A CN 102236202A
- Authority
- CN
- China
- Prior art keywords
- substrate
- photo
- lcd
- polarizer
- sensitive cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention provides an embedded optical touch liquid crystal display. The positions, corresponding to photosensitive elements, of an upper polarizing plate are free from polarization characteristics so as to improve the light intensity of the photosensitive elements and touch flexibility in a darkroom.
Description
Technical field
The present invention relates to a kind of touch-control liquid crystal display and manufacture method thereof, and relate in particular to a kind of built-in optical touch-control liquid crystal display and manufacture method thereof.
Background technology
Touch-control liquid crystal display uses on consumption electronic products such as personal digital aid (PDA), Smart Phone and satellite navigation widely because interface with user's interaction can be provided.General common touch-control liquid crystal display includes resistance-type, condenser type and optical profile type etc.
With regard to resistance-type or capacitive contact panel,, therefore can cause the increase of cost because the sensing film that need add detects the position of touching.In addition, the sensing film itself also can stop penetrating of light, therefore can reduce the display brightness of screen about 20%.And with regard to the built-in optical contact panel, its principle is that the photo-sensitive cell that utilizes amorphous silicon to make is responded to extraneous light, and detects photocurrent by the photosensitive circuit of being arranged in pairs or groups, thereby judges the position that the user touches.Because the photo-sensitive cell that amorphous silicon is made can be incorporated in the array processes of film liquid crystal display (TFT-LCD), so its manufacturing cost can significantly reduce.In addition, comparatively responsive to green glow because of human eye, existing built-in optical contact panel all is placed on photosensitive film transistor (photo TFT) in blueness or the red pixel area.
Yet extraneous light can pass through elements such as last Polarizer, glass substrate, ITO and liquid crystal layer before arriving photosensitive film transistor, therefore had light partly and was absorbed or reflects.What deserves to be mentioned is that because extraneous surround lighting is a nonpolarized light, the light of can only have an appointment half (50%) can pass through last Polarizer, therefore cause the touch-control sensitivity under the darkroom to reduce easily.
Summary of the invention
The invention provides a kind of built-in optical touch liquid crystal display, make the last Polarizer of the position that corresponds to photo-sensitive cell not have a polarized light property, increase the light intensity that arrives photo-sensitive cell by this, improve the touch-control sensitivity under the darkroom.
Comprising according to the method for manufacturing LCD of the present invention provides built-in optical touch-control liquid crystal display, this LCD to include infrabasal plate, upper substrate and is located in liquid crystal layer between the upper and lower substrate.Below infrabasal plate, be provided with Polarizer down, then be provided with Polarizer above the upper substrate.On infrabasal plate or upper substrate, be provided with a plurality of photo-sensitive cells.And in order to increase the light intensity that arrives photo-sensitive cell, last Polarizer corresponds to the position of photo-sensitive cell, respectively defines a zone, makes this zone not have a polarized light property in the mode that heats.
In order to allow how above-mentioned and other purpose of the present invention, feature and the advantage can be more obvious, hereinafter will be in conjunction with the accompanying drawings, be described in detail below.
Description of drawings
Fig. 1 a is a kind of aspect of the method for manufacturing LCD of the present invention, and wherein photo-sensitive cell is located on the infrabasal plate;
Fig. 1 b is a kind of aspect of the method for manufacturing LCD of the present invention, and wherein photo-sensitive cell is located on the upper substrate;
Fig. 2 is general polarized light plate structure;
Fig. 3 shows and to utilize mask to make the specific region of Polarizer not have a polarized light property;
Fig. 4 a is the another kind of aspect of the method for manufacturing LCD of the present invention, and wherein photo-sensitive cell is located on the infrabasal plate;
Fig. 4 b is the another kind of aspect of the method for manufacturing LCD of the present invention, and wherein photo-sensitive cell is located on the upper substrate.
Embodiment
With reference to figure 1a and 1b, the method of manufacturing LCD of the present invention comprises provides built-in optical touch-control liquid crystal display 100, and this LCD 100 includes infrabasal plate 110, upper substrate 120 and is located in liquid crystal layer 130 between the upper and lower substrate 110,120.Below infrabasal plate 110, be provided with Polarizer 140 down, then be provided with Polarizer 150 above the upper substrate 120.In order to detect the position that the user touches, on infrabasal plate 110 or upper substrate 120, be provided with a plurality of photo-sensitive cells 160, for example be photosensitive film transistor (photo TFT).And in order to increase the light intensity that arrives photo-sensitive cell 160, last Polarizer 150 corresponds to the position of photo-sensitive cell 160, respectively defines regionally 152, and a polarized light property is not had in this zone 152.
In order to make zone 152 not have a polarized light property, can utilize the mode of light or heat to destroy the molecule that is used for absorbing specific polarization light.For instance, with reference to figure 2, general Polarizer 200 is to be formed by two TAC layers, 210 double team PVA layer 220, and wherein PVA layer 220 is by the molecule that can absorb specific polarization light, for example is to be made of the formed molecule of iodide ion.Because very To Be Protected from Heat for the iodide ion in the PVA layer 220, therefore can utilize the mode of heating to destroy the bond of iodide ion, make it not have polarized light property.
According to above-mentioned principle, the mode that the present invention can utilize hot pressing is to PVA layer 220 heating at 152 places, zone that are positioned at Polarizer 150, destroys the bond of iodide ion so that it does not have a polarized light property.In addition, also can utilize light beam, for example be the zone 152 that Polarizer 150 is gone up in the irradiation of laser or high-intensity ultraviolet or infrared light, makes the iodide ion bond of the PVA layer 220 in the zone 152 destroyed because of being heated, thereby lose polarized light property.
With the method for laser damage iodide ion bond, can be on zone 152 with the laser direct irradiation, or make laser radiation after produce interfering on zone 152.Because laser is high relevant (coherent) light, its long mutually bright spot or bright rays of interfering the back to be produced has uniformly-spaced.In addition, in general, the photo-sensitive cell 160 that is arranged on substrate 110 or 120 also is uniformly-spaced, therefore can adjust interferometric parameter and make the long mutually bright spot that is produced correspond to photo-sensitive cell 160.So, can be correctly with laser radiation on zone 152, to destroy the bond of iodide ion.
In addition, generally speaking, making the mode of photosensitive film transistor 160, is by the mode of mask and utilization exposure, is formed on substrate 110 or 120.With reference to figure 3, therefore can utilize and make photosensitive film transistor 160 employed masks 310, light beam 320 only is radiated on the zone 152 of Polarizer 150, use the bond of destroying iodide ion.
With reference to figure 4a and 4b, except destroying iodide ion so that do not have the polarized light property in zone 152 in the mode of heating, the present invention also can use more high-intensity laser, directly at the opening 154 of scorification formation in regional 152 places less than photo-sensitive cell 160 sizes, for example form the opening less than 40 μ m * 40 μ m, the light intensity that so arrives photo-sensitive cell 160 more is increased.
According to the method for manufacturing LCD of the present invention, owing to make the last Polarizer of the position that corresponds to photo-sensitive cell not have a polarized light property, therefore can increase the light intensity of arrival photo-sensitive cell, improve the touch-control sensitivity under the darkroom by this.
Though the present invention discloses with previous embodiment, so it is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention, when doing various changes and modification.Therefore protection scope of the present invention is as the criterion when looking the accompanying Claim person of defining.
Claims (18)
1. LCD comprises:
First substrate;
Second substrate;
Liquid crystal layer is arranged between described first and second substrate;
Polarizer is arranged at a side of described liquid crystal layer, and described side has first substrate;
Photo-sensitive cell is arranged between the described Polarizer and second substrate, and the position that wherein said Polarizer corresponds to described photo-sensitive cell defines a zone, and a polarized light property is not had in described zone.
2. LCD as claimed in claim 1, wherein said zone includes opening.
3. LCD as claimed in claim 2, wherein said opening forms in the mode of laser scorification.
4. LCD as claimed in claim 2, wherein said opening is less than described photo-sensitive cell.
5. LCD as claimed in claim 2, wherein said opening is less than 40 μ m * 40 μ m.
6. LCD as claimed in claim 1, wherein said photo-sensitive cell are photosensitive film transistor.
7. LCD comprises:
First substrate;
Second substrate;
Liquid crystal layer is arranged between described first and second substrate;
First Polarizer is arranged at a side of described liquid crystal layer, and described side has first substrate;
Second Polarizer is arranged at a side of described liquid crystal layer, and described side has second substrate;
Photo-sensitive cell is arranged between described first Polarizer and described second Polarizer,
The position that wherein said second Polarizer corresponds to described photo-sensitive cell defines a zone, and a polarized light property is not had in described zone.
8. LCD as claimed in claim 7, wherein said zone includes opening.
9. LCD as claimed in claim 8, wherein said opening forms in the mode of laser scorification.
10. LCD as claimed in claim 8, wherein said opening is less than described photo-sensitive cell.
11. LCD as claimed in claim 8, wherein said opening is less than 40 μ m * 40 μ m.
12. LCD as claimed in claim 7, wherein said photo-sensitive cell are photosensitive film transistor.
13. a method of making LCD comprises the following step:
First substrate is provided;
Second substrate is provided;
Photo-sensitive cell is set on described first substrate or second substrate;
Liquid crystal layer is set between described first and second substrate;
First Polarizer is set on described first substrate;
Second Polarizer is set on described second substrate, the position that wherein said second Polarizer corresponds to described photo-sensitive cell defines a zone; And
Make described zone not have a polarized light property.
14. method as claimed in claim 13 wherein heats described zone in the mode of hot pressing and makes it not have a polarized light property.
15. method as claimed in claim 13 wherein makes it not have a polarized light property with light beam irradiates in described zone.
16. method as claimed in claim 15, the laser radiation after wherein use is interfered is on described zone.
17. method as claimed in claim 15 is radiated on the described zone after wherein making light beam by mask.
18. method as claimed in claim 13, wherein said photo-sensitive cell are photosensitive film transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010171186 CN102236202B (en) | 2010-04-28 | 2010-04-28 | Embedded optical touch liquid crystal display and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010171186 CN102236202B (en) | 2010-04-28 | 2010-04-28 | Embedded optical touch liquid crystal display and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102236202A true CN102236202A (en) | 2011-11-09 |
| CN102236202B CN102236202B (en) | 2013-11-06 |
Family
ID=44887002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010171186 Active CN102236202B (en) | 2010-04-28 | 2010-04-28 | Embedded optical touch liquid crystal display and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102236202B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102646006A (en) * | 2012-04-28 | 2012-08-22 | 南京中电熊猫液晶显示科技有限公司 | Touch display device integrated on displayer |
| CN110989066A (en) * | 2019-12-20 | 2020-04-10 | 京东方科技集团股份有限公司 | Polaroid, manufacturing method thereof and display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050134751A1 (en) * | 2003-12-17 | 2005-06-23 | Adiel Abileah | Light sensitive display |
| US20080246708A1 (en) * | 2007-04-05 | 2008-10-09 | Seiko Epson Corporation | Liquid crystal device, image sensor, and electronic apparatus |
| CN101498976A (en) * | 2008-12-26 | 2009-08-05 | 深圳华为通信技术有限公司 | Touch display unit and its fabrication method and electronic equipment |
| CN101539676A (en) * | 2008-03-19 | 2009-09-23 | 胜华科技股份有限公司 | Touch-control display device, touch-control liquid crystal display device and manufacturing method thereof |
-
2010
- 2010-04-28 CN CN 201010171186 patent/CN102236202B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050134751A1 (en) * | 2003-12-17 | 2005-06-23 | Adiel Abileah | Light sensitive display |
| US20080246708A1 (en) * | 2007-04-05 | 2008-10-09 | Seiko Epson Corporation | Liquid crystal device, image sensor, and electronic apparatus |
| CN101539676A (en) * | 2008-03-19 | 2009-09-23 | 胜华科技股份有限公司 | Touch-control display device, touch-control liquid crystal display device and manufacturing method thereof |
| CN101498976A (en) * | 2008-12-26 | 2009-08-05 | 深圳华为通信技术有限公司 | Touch display unit and its fabrication method and electronic equipment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102646006A (en) * | 2012-04-28 | 2012-08-22 | 南京中电熊猫液晶显示科技有限公司 | Touch display device integrated on displayer |
| CN110989066A (en) * | 2019-12-20 | 2020-04-10 | 京东方科技集团股份有限公司 | Polaroid, manufacturing method thereof and display device |
| CN110989066B (en) * | 2019-12-20 | 2022-01-11 | 京东方科技集团股份有限公司 | Polaroid, manufacturing method thereof and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102236202B (en) | 2013-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018099176A1 (en) | Display substrate and manufacturing method therefor, fingerprint recognition apparatus, and display apparatus | |
| WO2017202075A1 (en) | Array substrate, display panel, and display device | |
| TWI408437B (en) | A liquid crystal display | |
| US8189128B2 (en) | Liquid crystal display having first and second diffusion members and a plurality of sensors that can detect a sensing signal reflected from an object | |
| KR101420424B1 (en) | Liquid crystal display having multi-touch sensing function and driving method thereof | |
| WO2016011769A1 (en) | Pixel drive circuit and drive method thereof, array substrate, and transparent reflective display device | |
| US20160363812A1 (en) | Array Substrate, Liquid Crystal Display Panel and Display Device | |
| KR20130030721A (en) | A method of manufacturing a touch display device | |
| US20130300952A1 (en) | Touch display panel and fabricating method thereof | |
| CN109037296B (en) | Display device and electronic equipment | |
| WO2016165260A1 (en) | Capacitive touch screen and manufacturing process thereof, and touch display panel | |
| US20200356747A1 (en) | Display module and mobile terminal | |
| JP5908089B2 (en) | Light diffusion touch panel, manufacturing method thereof, and display device | |
| JP6054634B2 (en) | Liquid crystal display panel and driving method thereof | |
| KR20130130654A (en) | In-cell touch display panel structure with metal layer for sensing | |
| TW200933557A (en) | Display device | |
| CN103699264B (en) | A kind of touch-control circuit, touch base plate and touch control display apparatus | |
| TW201728884A (en) | Pressure sensing device and manufacturing method thereof | |
| RU2011131378A (en) | LIQUID DISPLAY DEVICE | |
| TW201626083A (en) | Display apparatus | |
| CN105426007A (en) | On-cell touch display screen and portable electronic product | |
| CN105488483A (en) | Optical sensor capable of improving quality of fingerprint scan image | |
| CN103676227A (en) | Display device and cover member | |
| KR101684392B1 (en) | Touch Screen Panel | |
| CN110794979A (en) | Touch control panel and touch control display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |