CN103412676B - A kind of touch screen and display device - Google Patents
A kind of touch screen and display device Download PDFInfo
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- CN103412676B CN103412676B CN201310322908.XA CN201310322908A CN103412676B CN 103412676 B CN103412676 B CN 103412676B CN 201310322908 A CN201310322908 A CN 201310322908A CN 103412676 B CN103412676 B CN 103412676B
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- 238000005286 illumination Methods 0.000 claims abstract description 5
- 239000000758 substrate Substances 0.000 claims description 44
- 239000010409 thin film Substances 0.000 claims description 32
- 239000011159 matrix material Substances 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 abstract description 5
- 101100489584 Solanum lycopersicum TFT1 gene Proteins 0.000 description 31
- 101100214488 Solanum lycopersicum TFT2 gene Proteins 0.000 description 18
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000000969 carrier Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
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Abstract
The invention discloses a kind of touch screen and display device, using at least one gate line in array base palte as touch-control scan line, array base palte has the touch-control read line staggered with touch-control scan line, includes photosensitive unit and touch switch unit in touch-control scan line and touch-control read line limited area；Wherein, photosensitive unit is all connected with touch-control scan line with touch switch unit, and photosensitive unit is connected with touch-control read line by touch switch unit；When touch-control scan line loads scanning signal, photosensitive unit is made to be in opening by illumination, this photosensitive unit is to touch switch unit output control signal, control signal controls touch switch unit to export touch sense signals to touch-control read line, realize optical touch control function, with respect to capacitance type in-cell touch panel, the problem of signal interference and signal delay will not be produced in large scale.
Description
Technical Field
The invention relates to the technical field of touch screens, in particular to a touch screen and a display device.
Background
With the rapid development of display technology, Touch Screen panels (Touch screens) have gradually spread throughout the lives of people. Currently, classified by principle, a touch screen generally includes: resistive touch screens, capacitive touch screens, optical touch screens, and the like. Classified according to composition structure, the touch screen substantially includes: the touch screen includes an Out-cell panel with a touch screen attached thereto, an On-cell panel with a touch screen attached thereto, and an In-cell panel with a touch screen embedded therein. The structure of the touch screen embedded in the panel can reduce the whole thickness of the touch screen, greatly reduce the manufacturing cost of the touch screen and be favored by various large panel manufacturers.
At present, the design of embedding a touch screen in a panel is mainly realized in a resistance type, capacitance type or optical type mode. The resistance type sensor belongs to a low-end sensing technology, and the manufactured product generally has short service life; capacitive touch screens are also popular for faster development, but are mainly suitable for small and medium-sized display devices, such as products of 10 inches or less, and for larger-sized display devices, the capacitive touch screens cause signal interference and signal delay problems.
Disclosure of Invention
The embodiment of the invention provides a touch screen and a display device, which are used for solving the problems of signal interference and signal delay of a large-size touch screen.
The embodiment of the invention provides a touch screen, which comprises an array substrate with a plurality of grid signal lines;
at least one grid signal line in the array substrate is used as a touch scanning line;
the array substrate is provided with touch reading lines which are arranged in a staggered mode with the touch scanning lines;
the area defined by the touch scanning line and the touch reading line comprises a photosensitive unit and a touch switch unit, wherein,
the photosensitive unit and the touch switch unit are connected with the touch scanning line, and the photosensitive unit is connected with the touch reading line through the touch switch unit; when the scanning signal is loaded on the touch scanning line, the photosensitive unit is in an open state through illumination, the photosensitive unit outputs a control signal to the touch switch unit, and the control signal controls the touch switch unit to output a touch sensing signal to the touch reading line.
The display device provided by the embodiment of the invention comprises the touch screen provided by the embodiment of the invention.
The embodiment of the invention has the beneficial effects that:
in the touch screen and the display device provided by the embodiment of the invention, at least one grid signal line in the array substrate is used as a touch scanning line, the array substrate is provided with touch reading lines which are arranged in a staggered manner with the touch scanning line, and a photosensitive unit and a touch switch unit are contained in an area limited by the touch scanning line and the touch reading lines; the photosensitive unit and the touch switch unit are connected with the touch scanning line, and the photosensitive unit is connected with the touch reading line through the touch switch unit; when the touch scanning line loads a scanning signal, the photosensitive unit is in an open state through illumination, the photosensitive unit outputs a control signal to the touch switch unit, and the control signal controls the touch switch unit to output a touch sensing signal to the touch reading line, so that an optical touch function is realized.
Drawings
Fig. 1 is a schematic structural diagram of an array substrate in a touch screen according to an embodiment of the invention;
FIG. 2 is a cross-sectional view of a touch screen provided by an embodiment of the invention;
fig. 3 is a timing diagram of an operation of a touch screen according to an embodiment of the present invention;
fig. 4 is a second schematic structural diagram of an array substrate in a touch screen according to an embodiment of the invention.
Detailed Description
The following describes in detail a specific embodiment of a touch panel and a display device according to an embodiment of the present invention with reference to the drawings.
A touch panel according to an embodiment of the present invention, as shown in fig. 1, includes an array substrate having a plurality of Gate signal lines Gate n (n =1,2,3. -);
at least one Gate signal line Gate n (n =1,2, 3.) in the array substrate serves as a touch scan line Scanm (m =1,2,3. -);
the array substrate is provided with touch reading lines Read out n (n =1,2, 3.) arranged in a staggered manner with the touch scanning lines Scan m;
the area defined by the touch Scan line Scan m and the touch Read line Read out n includes a light sensing unit 102 and a touch switch unit 103; wherein,
the photosensitive unit 102 and the touch switch unit 103 are both connected to the touch Scan line Scan m, and the photosensitive unit 102 is connected to the touch Read line Read out n through the touch switch unit 103; when the Scan signal is loaded on the Scan line Scan m, the light sensing unit 102 is turned on by light, the light sensing unit 102 outputs a control signal to the touch switch unit 103, and the control signal controls the touch switch unit 103 to output a touch sensing signal to the touch readout line Read out n.
It should be noted that, in the touch screen provided by the embodiment of the present invention, the touch screen is illuminated, that is, the touch screen has a touch, and the touch screen is not illuminated, that is, the touch screen has no touch.
Further, in the touch screen provided in the embodiment of the present invention, as shown in fig. 1, a plurality of pixel units 101 arranged in a matrix are further disposed on the array substrate, and in a specific implementation, the touch reading line Read out n may be located between the pixel units 101 in adjacent rows.
Further, in the touch screen provided in the embodiment of the present invention, as shown in fig. 2, the touch screen further includes: an opposite substrate arranged opposite to the array substrate, wherein one side of the opposite substrate facing the array substrate is provided with a black matrix 104;
the pattern of the black matrix 104 has an opening region at least in a region corresponding to the photosensitive cell 102, so that external light can be irradiated to the photosensitive cell 102 from the opening region to implement a touch function.
In specific implementation, the touch screen provided by the embodiment of the invention can be applied to a structure in which a color filter is arranged on an opposite substrate opposite to an array substrate, that is, a color filter substrate; of course, the present invention can also be applied to a structure in which color filters are disposed in an array substrate, and is not limited herein.
Specifically, in the touch screen provided in the embodiment of the present invention, in practical implementation, as shown in fig. 1, the light sensing unit 102 may include a light sensing transistor TFT 1; the source of the light sensing transistor TFT1 is connected to the touch Scan line Scan m, and the gate and the drain of the light sensing transistor TFT1 are both connected to the touch switch unit 103, specifically, the gate and the drain of the light sensing transistor TFT1 may be connected to the touch switch unit 103, or the gate and the drain of the light sensing transistor TFT1 may be connected to the touch switch unit 103 after being connected together, which is not limited herein.
Specifically, the operation principle of the photo transistor TFT1 is: when light irradiates the photosensitive transistor TFT1 and a potential difference exists between the source and the drain of the photosensitive transistor TFT1, the number of carriers in the active layer of the photosensitive transistor TFT1 is increased rapidly, and a large photocurrent is generated between the source and the drain of the photosensitive transistor TFT1, namely the photosensitive unit is in an on state; when light irradiates the photosensitive transistor TFT1, but no potential difference exists between the source electrode and the drain electrode of the photosensitive transistor TFT1, no obvious current is generated between the source electrode and the drain electrode of the photosensitive transistor TFT 1; when the phototransistor TFT1 is not irradiated with light, the number of carriers in the active layer of the phototransistor TFT1 is small, the phototransistor TFT1 is in an off state, and no current is generated by the presence or absence of a potential difference between the source and the drain of the phototransistor TFT 1. When the Scan signal is applied to the touch Scan line Scan m, a potential difference exists between the source and the drain of the light sensing transistor TFT 1.
In summary, the light-sensing transistor TFT1 outputs a control signal only when the Scan signal is applied to the Scan line Scan m and light irradiates the light-sensing transistor TFT 1. Of course, the photosensitive unit may have other structures, and is not limited herein.
Specifically, in the touch screen provided in the embodiment of the present invention, the photosensitive transistor may be an infrared photosensitive transistor, and certainly, other photosensitive transistors for implementing the technical solution of the present invention may also be used, which is not limited herein.
Preferably, in the touch screen provided in the embodiment of the invention, as shown in fig. 1, the touch switch unit 103 for connecting the light sensing unit 102 and the touch readout line Read out n may specifically include a thin film transistor TFT2, wherein a gate of the thin film transistor TFT2 is connected to the light sensing unit 102, a drain of the thin film transistor TFT2 is connected to the touch readout line Read out n, and a source of the thin film transistor TFT2 is connected to the touch Scan line Scan m. Of course, the touch switch unit may have other structures, which is not limited herein.
It should be noted that the source and the drain of the transistor in the embodiment of the present invention are not specifically distinguished, and the source and the drain may be interchanged.
Moreover, in the touch screen provided in the embodiment of the present invention, as shown in fig. 1, when the touch switch unit 103 is the thin film transistor TFT2, the light sensing unit 102 is the light sensing transistor TFT 1; the source of the light sensing transistor TFT1 is connected to the touch scan line Scanm, and the gate and the drain of the light sensing transistor TFT1 are both connected to the gate of the thin film transistor TFT 2. When the control signal output by the light sensing unit 102 to the gate of the TFT2 as the touch switch unit 103 is greater than or equal to the gate threshold voltage of the TFT2, the TFT2 is in an on state, and if there is a potential difference between the source and the drain of the TFT2, a current is generated between the source and the drain of the TFT2, and a touch sensing signal is output to the touch reading line Read out n.
In summary, the photosensitive unit is only capable of outputting the control signal when the touch scan line loads the scan signal (i.e., the touch scan line is at a high voltage), and the touch switch unit is only in the on state when the control signal output by the photosensitive unit is greater than or equal to the threshold voltage for turning on the touch switch unit, and is in the off state for the rest of time. That is, the touch switch unit may be in the on state only when the touch scan line loads the scan signal.
Therefore, the source electrode of the thin film transistor serving as the touch switch unit is directly connected with the touch scanning line, and compared with the mode that a high-potential signal line is independently arranged to always input a high-potential signal to the source electrode of the thin film transistor, the high-potential signal is input to the source electrode of the thin film transistor only when the thin film transistor is possibly in an on state, so that the power consumption of the touch screen can be saved. As is known, when the tft is in an off state, a leakage current still exists, and the magnitude of the leakage current is proportional to a potential difference between a source and a drain of the tft, and a high-potential signal line is separately connected to the tft serving as a touch switch unit, so that the source of the tft is always at a high potential, and the tft generates a large leakage current to flow to a touch readout line, thereby reducing the sensitivity of the touch panel. In the touch screen provided by the embodiment of the invention, the source electrode of the thin film transistor serving as the touch switch unit is directly connected with the touch scanning line, so that the source electrode of the thin film transistor is in a high potential only when the thin film transistor is possibly in an on state. Therefore, the source electrode of the thin film transistor serving as the touch switch unit is directly connected with the touch scanning line, and compared with the mode that the source electrode of the thin film transistor is always at a high potential by independently setting a high potential signal line, the sensitivity of the touch screen can be improved, and the signal to noise ratio of the touch screen is further improved.
Meanwhile, the source electrode of the thin film transistor serving as the touch switch unit is directly connected with the touch scanning line, and a high-potential signal line connected with the source electrode can be omitted, so that the aperture opening ratio of the touch screen is ensured.
In specific implementation, each component of the thin film transistor serving as the touch switch unit can be prepared in the same layer as each component in the existing thin film transistor for controlling the pixel unit switch in the array substrate, so that a new preparation process is not needed, and the method can be realized only by changing the composition of each corresponding film layer, thereby saving the production cost and improving the production efficiency. Of course, in the implementation, the touch switch may have other structures, which are not described in detail herein.
The following briefly introduces a specific operation principle of the touch screen provided by the embodiment of the present invention by taking the structure of the light sensing unit, specifically the light sensing transistor TFT1, and the touch switch unit, specifically the thin film transistor TFT2, shown in fig. 1 as an example, in conjunction with the timing chart shown in fig. 3.
In fig. 3, 201, 202, and 203 are waveform diagrams of input signals of Gate signal lines Gate n-1, Gate n, and Gate n +1, respectively, where Gate n is used as a touch scan line, 204 is a waveform diagram of an output signal of a touch Read line Read out n when light irradiates the photo transistor TFT1, and 205 is a waveform diagram of an output signal of a touch Read line Read out n when no light irradiates the photo transistor TFT 1.
In the first period T1, the Gate signal line Gate n-1201 is at the high potential VghThe Gate signal line Gate n202, i.e. the touch scan line, is at a low potential VglThe Gate signal line Gate n +1203 is also at a low potential VglNo potential difference exists between the source and the drain of the photo transistor TFT1 and between the source and the drain of the thin film transistor TFT2, the photo transistor TFT1 is not irradiated by light, and no control signal is output to the thin film transistor TFT2 by the photo transistor TFT1, so that no touch sensing signal is output from the touch reading line Read out n.
In the second period T2, the Gate signal lines Gate n-1201 and Gate n +1203 are at the low potential VglThe Gate signal line Gate n202, i.e. the touch scan line, is at a high potential VghA potential difference exists between the source and drain of the light sensing transistor TFT1 and between the source and drain of the thin film transistor TFT 2. At this time, if the light irradiates the photo transistor TFT1, a photocurrent is generated between the source and drain of the photo transistor, that is, the photo unit is in an on state, and the photo transistor TFT1 outputs a signal input from the touch scanning line to the source thereof as a control signal to the gate of the thin film transistor TFT 2; when the control signal is greater than or equal to the gate voltage of the thin film transistor TFT2, the thin film transistor TFT2 is in an on state, and the thin film transistor TFT2 outputs a signal input to the source of the touch scan line as a touch sensing signal to the touch Read line Read out n; when the photosensitive transistor TFT1 is not irradiated by light, the feeling is goodThe phototransistor TFT1 is in the off state, and no control signal is output to the thin film transistor TFT2 from the photo transistor TFT1, so that no touch sensing signal is output from the touch Read line Read out n.
In the third period T3, the Gate signal line Gate n-1201 is at the low potential VglThe Gate signal line Gate n202, i.e. the touch scan line, is also at the low potential VglThe Gate signal line Gate n +1203 is at a high potential VghNo potential difference exists between the source and the drain of the photo transistor TFT1 and between the source and the drain of the thin film transistor TFT2, the photo transistor TFT1 is not irradiated by light, and no control signal is output from the photo transistor TFT1, so that no touch sensing signal is output from the touch Read line Read out n.
Generally, the touch accuracy of the touch screen is usually in the millimeter level, and the display accuracy of the array substrate is usually in the micrometer level, so that it can be seen that the touch scanning lines and the touch reading lines required by the touch screen are much smaller than the driving lines (data signal lines and gate signal lines) required by the display of the array substrate, and therefore, in the touch screen provided by the embodiment of the present invention, when the touch reading lines and the touch scanning lines are set, the intervals between the touch scanning lines are generally set to be the same, and the intervals between the touch reading lines are set to be the same.
Optimally, the distance between the touch scan lines and the distance between the touch read lines may be set to be the same to unify the touch accuracy of the touch screen.
Furthermore, when the touch reading lines between the pixel units in the adjacent rows are realized in the array substrate, each touch reading line and the data signal line in the array substrate can be arranged on the same layer and are insulated from each other, that is, the touch reading lines insulated from the data signal lines are prepared while the data signal lines are prepared, so that an additional preparation process is not required to be added when the array substrate is prepared, the graphs of the data signal lines and the touch reading lines can be formed only through a composition process, the preparation cost can be saved, and the added value of products is improved. Of course, the touch reading line and the data signal line may be separately prepared, and are not limited herein.
Preferably, in order to maximally ensure the aperture ratio of the large-sized touch screen, the pixel structure in the array substrate of the touch screen provided by the embodiment of the invention may adopt a dual-Gate structure, as shown in fig. 4, wherein Datan (n =1,2,3.. said.) represents a Data signal line of the array substrate, Gate n (n =1,2,3.. said) represents a Gate signal line of the array substrate, the photosensitive unit and the touch switch unit are not shown in fig. 4, in the dual-Gate structure, a plurality of pixel units are arranged in a matrix on the array substrate, two Gate signal lines, such as Gate1 and Gate2, Gate3 and Gate4, Gate5 and Gate6, are arranged between pixel units of adjacent rows on the array substrate, and each two adjacent rows of pixel units are in a column, and share a Data signal line 1, which is located between two columns of pixel units, Data2, Data 3. The double-gate structure on the array substrate reduces the number of data signal lines and source electrode driving ICs by doubling the number of gate signal lines, thereby reducing the overall cost of the display.
Further, the dual gate structure shown in fig. 4 can save the position of the data signal line between the adjacent pixel unit columns by changing the positions of the gate signal line and the TFT switch of the pixel units in two adjacent rows. Thus, as shown in fig. 4, each touch Read line Read out n may be disposed at a gap between adjacent pixel unit columns, that is, each touch Read line Read out n is specifically located at the gap between adjacent pixel unit columns, so that the occupancy rate of the pixel units may be further reduced, and the touch screen may have a larger aperture ratio.
Based on the same inventive concept, an embodiment of the present invention further provides a display device, including the touch screen provided in the embodiment of the present invention, where the display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. The implementation of the display device can be referred to the above embodiment of the touch screen, and repeated details are not repeated.
In the touch screen and the display device provided by the embodiment of the invention, at least one grid signal line in the array substrate is used as a touch scanning line, the array substrate is provided with touch reading lines which are arranged in a staggered manner with the touch scanning line, and a photosensitive unit and a touch switch unit are contained in an area limited by the touch scanning line and the touch reading lines; the photosensitive unit and the touch switch unit are connected with the touch scanning line, and the photosensitive unit is connected with the touch reading line through the touch switch unit; when the touch scanning line loads a scanning signal, the photosensitive unit is in an open state through illumination, the photosensitive unit outputs a control signal to the touch switch unit, and the control signal controls the touch switch unit to output a touch sensing signal to the touch reading line, so that an optical touch function is realized.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. A touch screen comprises an array substrate with a plurality of grid signal lines, and is characterized in that the array substrate comprises a plurality of grid signal lines;
at least one grid signal line in the array substrate is used as a touch scanning line;
the array substrate is provided with touch reading lines which are arranged in a staggered mode with the touch scanning lines;
a photosensitive unit and a touch switch unit are contained in an area defined by the touch scanning line and the touch reading line; wherein,
the photosensitive unit and the touch switch unit are connected with the touch scanning line, and the photosensitive unit is connected with the touch reading line through the touch switch unit; when the touch scanning line loads a scanning signal, the photosensitive unit is in an open state through illumination, the photosensitive unit outputs a control signal to the touch switch unit, and the control signal controls the touch switch unit to output a touch sensing signal to the touch reading line;
the touch switch unit comprises a thin film transistor, and the photosensitive unit comprises a photosensitive transistor; the source electrode of the photosensitive transistor is connected with the touch scanning line, the grid electrode and the drain electrode of the photosensitive transistor are both connected with the grid electrode of the thin film transistor but not connected with the touch scanning line, the source electrode of the thin film transistor is connected with the touch scanning line, and the drain electrode of the thin film transistor is connected with the touch reading line.
2. The touch screen of claim 1, wherein the photo-sensing transistor is an infrared photo-sensing transistor.
3. The touch screen of claim 1, wherein each of the touch readout lines is disposed in the same layer as and insulated from a data signal line in the array substrate.
4. The touch panel of claim 1, wherein a plurality of pixel units are arranged in a matrix on the array substrate, two gate signal lines are provided between pixel units in adjacent rows of the array substrate, and two adjacent rows of pixel units are used as a group of pixel unit columns, and each group of pixel unit columns shares a data signal line between two rows of pixel units.
5. The touch screen of claim 4, wherein each of the touch read lines is located specifically at a gap between adjacent columns of pixel cells.
6. The touch screen of any of claims 1-5, further comprising: the opposite substrate is arranged opposite to the array substrate, and one side of the opposite substrate, which faces the array substrate, is provided with a black matrix;
the pattern of the black matrix is provided with an opening region at least in a region corresponding to the photosensitive unit.
7. A display device characterized by comprising a touch screen according to any one of claims 1 to 6.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310322908.XA CN103412676B (en) | 2013-07-29 | 2013-07-29 | A kind of touch screen and display device |
| PCT/CN2013/085695 WO2015014029A1 (en) | 2013-07-29 | 2013-10-22 | Touch screen and display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310322908.XA CN103412676B (en) | 2013-07-29 | 2013-07-29 | A kind of touch screen and display device |
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| Publication Number | Publication Date |
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| CN103412676A CN103412676A (en) | 2013-11-27 |
| CN103412676B true CN103412676B (en) | 2017-03-01 |
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| CN201310322908.XA Expired - Fee Related CN103412676B (en) | 2013-07-29 | 2013-07-29 | A kind of touch screen and display device |
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| CN (1) | CN103412676B (en) |
| WO (1) | WO2015014029A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104679355B (en) * | 2015-03-19 | 2017-10-10 | 合肥鑫晟光电科技有限公司 | A kind of optical touch screen and display device |
| CN105679251B (en) * | 2016-04-11 | 2018-11-30 | 京东方科技集团股份有限公司 | Touch-control display module and its driving method, touch-control display panel and device |
| CN106354345B (en) * | 2016-11-11 | 2020-01-10 | 京东方科技集团股份有限公司 | Touch unit, touch module, embedded touch screen and display device |
| CN109147693B (en) * | 2018-09-03 | 2020-08-04 | 武汉华星光电半导体显示技术有限公司 | LED display device with infrared identification |
| CN110264947B (en) * | 2019-06-18 | 2021-01-22 | 京东方科技集团股份有限公司 | Pixel circuit, driving method and display device |
| CN111521546B (en) * | 2020-06-15 | 2023-07-25 | 京东方科技集团股份有限公司 | Cell sensor array and cell detection chip |
| CN112835225A (en) * | 2021-03-17 | 2021-05-25 | 维沃移动通信有限公司 | Touch display device and electronic equipment |
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- 2013-10-22 WO PCT/CN2013/085695 patent/WO2015014029A1/en active Application Filing
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| CN102073402A (en) * | 2009-11-20 | 2011-05-25 | 群康科技(深圳)有限公司 | Touch display device |
| CN102543017A (en) * | 2010-12-10 | 2012-07-04 | 乐金显示有限公司 | Liquid crystal display device |
| CN202939579U (en) * | 2012-11-30 | 2013-05-15 | 北京京东方光电科技有限公司 | Half-transparent and half-reflecting type embedded touch screen and display device |
| CN203366282U (en) * | 2013-07-29 | 2013-12-25 | 合肥京东方光电科技有限公司 | Touch screen and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103412676A (en) | 2013-11-27 |
| WO2015014029A1 (en) | 2015-02-05 |
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