CN102385204A - Display panel capable of picking up image - Google Patents
Display panel capable of picking up image Download PDFInfo
- Publication number
- CN102385204A CN102385204A CN2011103298305A CN201110329830A CN102385204A CN 102385204 A CN102385204 A CN 102385204A CN 2011103298305 A CN2011103298305 A CN 2011103298305A CN 201110329830 A CN201110329830 A CN 201110329830A CN 102385204 A CN102385204 A CN 102385204A
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- electric capacity
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- 238000005286 illumination Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 description 19
- 238000010586 diagram Methods 0.000 description 12
- 239000004973 liquid crystal related substance Substances 0.000 description 8
- 230000001427 coherent effect Effects 0.000 description 2
- 238000007600 charging Methods 0.000 description 1
- 238000000701 chemical imaging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009183 running Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses a display panel capable of capturing images, which comprises a plurality of data lines for transmitting display data, a plurality of scanning lines for transmitting scanning signals, a plurality of pixels electrically connected with the data lines and the scanning lines, a plurality of sensing lines and an image processing unit. At least one of the pixels comprises an image sensing circuit for generating a voltage signal according to the illumination intensity. The image sensing circuit is electrically connected to one of the sensing lines. The image processing unit is electrically connected to the sensing lines and used for reading the voltage of the image sensing circuit through the sensing lines.
Description
Technical field
The present invention relates to a kind of display panel, refer to a kind of display panel that in pixel, is provided with the image sensing circuit especially.
Background technology
Please refer to Fig. 1, Fig. 1 is the synoptic diagram of the pixel structure of known display panels.As shown in Figure 1, each pixel P1 of display panels comprises transistor T, and capacitor C.The control end of transistor T is electrically connected on sweep trace S, and first end of transistor T is electrically connected on data line D.Sweep trace S is in order to the open and close of transmission sweep signal with oxide-semiconductor control transistors T.Data line D in order to transmitting and displaying voltage so that pixel P1 display frame.First end of capacitor C is electrically connected on second end of transistor T, and second end of capacitor C is electrically connected on a common voltage source V com.When transistor T was unlocked, display voltage can be transferred into the capacitor C of pixel P1 so that the two ends of capacitor C produce voltage difference, and then the liquid crystal deflection of driving pixels P1 is with display frame.
Please refer to Fig. 2, Fig. 2 is the known synoptic diagram that comprises the liquid crystal indicator 200 of CIS.As shown in Figure 2, CIS 210 is arranged on the liquid crystal indicator 200.CIS 210 is in order to the image in acquisition liquid crystal indicator 200 the place aheads, and liquid crystal indicator 200 can be shown in CIS 210 picked image on its screen.Yet, CIS 210 is arranged at the mechanism space that not only can take liquid crystal indicator 200 on the liquid crystal indicator 200, also can increase the complicacy on the mechanism design.
Summary of the invention
The present invention provides a kind of display panel, comprises many data lines in order to the transmitting and displaying data, and the multi-strip scanning line is in order to the transmission sweep signal; A plurality of pixels that are configured to matrix form; Be electrically connected on these data lines and these sweep traces, many sense wires, and image process unit.At least one pixel of these pixels comprises an image sensing circuit, and this image sensing circuit comprises the first transistor, and its control end is electrically connected on the one scan line of these sweep traces; First electric capacity, its first end is electrically connected on first end of this first transistor, and second end is electrically connected on a voltage potential; The photoinduction unit, its first end is electrically connected on first end of this first electric capacity, and second end is electrically connected on this voltage potential, and this photoinduction unit is used for producing leakage current according to intensity of illumination; And transistor seconds, its control end and first end are electrically connected on the adjacent scanning lines of this sweep trace, and second end is electrically connected on first end of this first electric capacity.Sense wire in these sense wires is electrically connected on second end of this first transistor.This image process unit is electrically connected on these sense wires, is used for when this first transistor is unlocked reading through these sense wires the voltage of this first electric capacity.
Compared to prior art, be provided with the image of image sensing circuit in the pixel of display panel of the present invention, and do not need to dispose in addition CIS, and then save the mechanism space in order to acquisition display panel the place ahead, reduce the complicacy of mechanism design.In addition, display panel of the present invention increases the image sensing circuit under original pixel structure, and it is functional in what use significantly to improve display panel.
Description of drawings
Fig. 1 is the synoptic diagram of the pixel structure of known display panels;
Fig. 2 is the known synoptic diagram that comprises the display panels of CIS;
Fig. 3 is the synoptic diagram of display panel of the present invention;
Fig. 4 is the synoptic diagram of the pixel structure of Fig. 3 display panel;
Fig. 5 is the synoptic diagram of the coherent signal of image sensing circuit;
Fig. 6 is the synoptic diagram of an embodiment of photoinduction of the present invention unit.
Wherein, Reference numeral
200 liquid crystal indicators, 210 CISs
300 display panels, 310 data drivers
320 scanner drivers, 330 image process units
410 display circuits, 420 image sensing circuit
422 photoinduction unit, 424 interdigital shape electrodes
P1, P2 pixel T, T1, T2, T3 transistor
D data line L sense wire
S, S1, S2 sweep trace C, C1, C2 electric capacity
Vs1, Vs2, Vc2 voltage Vcom common voltage source
Embodiment
Please refer to Fig. 3, Fig. 3 is the synoptic diagram of display panel 300 of the present invention.As shown in Figure 3; Display panel 300 of the present invention comprises data driver 310, scanner driver 320, and many data line D are in order to transmit the video data of data driver 310; Multi-strip scanning line S is in order to the sweep signal of transmission scanner driver 320; Many sense wire L, a plurality of pixel P2 that are configured to matrix form are electrically connected on data line D, sweep trace S and sense wire L, and an image process unit 330.
Please refer to Fig. 4, Fig. 4 is the synoptic diagram of the pixel structure of Fig. 3 display panel 300.As shown in Figure 4, each pixel P2 of display panel also comprises image sensing circuit 420 except comprising display circuit 410.Display circuit 410 comprises transistor T 1 and capacitor C 1, and therefore the function mode of transistor T 1 and capacitor C 1 no longer adds explanation similar in appearance to transistor T and the capacitor C of Fig. 1.Image sensing circuit 420 comprises transistor T 2, T3, capacitor C 2, and photoinduction unit 422.The control end of transistor T 2 is electrically connected on the first sweep trace S1, and first end of transistor T 2 is electrically connected on first end of capacitor C 2, and second end of transistor T 2 is electrically connected on sense wire L.Second end of capacitor C 2 is electrically connected on common voltage source Vcom.First end of photoinduction unit 422 is electrically connected on first end of capacitor C 2, and second end of photoinduction unit 422 is electrically connected on common voltage source Vcom.Photoinduction unit 422 can be used to produce leakage current according to intensity of illumination.The control end of transistor T 3 and first end are electrically connected on the second sweep trace S2 adjacent to the first sweep trace S1, and second end of transistor T 3 is electrically connected on first end of capacitor C 2.
Please refer to Fig. 5, and in the lump with reference to figure 3 and Fig. 4.Fig. 5 is the synoptic diagram of the coherent signal of image sensing circuit 420.When 420 runnings of image sensing circuit; At first in the first period t1; The sweep signal Vs2 of the second sweep trace S2 raise for noble potential with turn-on transistor T3, and to capacitor C 2 chargings, and the sweep signal Vs1 of the first sweep trace S1 is that electronegative potential is to close transistor T 2.In the second period t2, first and second sweep trace S1, the sweep signal Vs1 of S2, Vs2 are all electronegative potential closing transistor T 2, T3, and photoinduction unit 422 produces leakage current according to intensity of illumination.If a little less than the intensity of illumination, then the leakage current of photoinduction unit 422 generations is little, if intensity of illumination is strong, then the leakage current of photoinduction unit 422 generations is big.And the voltage Vc2 of capacitor C 2 will change along with the leakage current of photoinduction unit 422.In the 3rd period t3; It is that noble potential is with turn-on transistor T2 that the sweep signal Vs1 of the first sweep trace S1 raises; And the sweep signal Vs2 of the second sweep trace S2 is that electronegative potential is to close transistor T 3; Image process unit 330 can read the voltage Vc2 of the capacitor C 2 of image sensing circuit 420 through sense wire L at this moment, and produces signal of video signal according to the voltage Vc2 of capacitor C 2.Image process unit 300 can be further according to signal of video signal control pixel P2 show image, with show image sensing circuit 420 picked image on display panel 300.
Through above-mentioned configuration, image sensing circuit 420 can with the situation of display circuit 410 shared data line D, sweep trace S and common voltage source Vcom under the image in acquisition display panel 300 the place aheads.
In the above-described embodiments, each pixel all comprises the image sensing circuit.Yet, might not all pixels all comprise the image sensing circuit, in other embodiments, can only in the part pixel, comprise the image sensing circuit.
In addition, first sweep trace that second sweep trace of pixel can the next column pixel, that is the two adjacent pixels of going together are electrically connected on same scan line.Perhaps, second sweep trace of pixel is different from first sweep trace of next column pixel, that is the two adjacent pixels of going together are electrically connected on the different scanning line.And the two adjacent pixels of going together for example are: two pixels that do not comprise the image sensing circuit, have pixel or two pixels that all comprise the image sensing circuit that comprise the image sensing circuit at least.
Please refer to Fig. 6, Fig. 6 is the synoptic diagram of an embodiment of photoinduction of the present invention unit 422.As shown in Figure 6, photoinduction unit 422 comprises interdigital shape electrode 424, and it can produce electron-hole pair when irradiation, and and then generation leakage current.Photoinduction of the present invention unit 422 does not exceed with the embodiment of Fig. 6, and photoinduction of the present invention unit can also be a photodiode or a photoinduction transistor.
In addition, in the above-described embodiments, second end of photoinduction unit 422 and capacitor C 2 all is electrically connected on common voltage source Vcom, yet in other embodiments, second end of photoinduction unit 422 and capacitor C 2 also can be electrically connected on earth terminal.
Compared to prior art, be provided with the image of image sensing circuit in the pixel of display panel of the present invention, and do not need to dispose in addition CIS, and then save the mechanism space in order to acquisition display panel the place ahead, reduce the complicacy of mechanism design.In addition, display panel of the present invention increases the image sensing circuit under original pixel structure, and it is functional in what use significantly to improve display panel.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (9)
1. a display panel is characterized in that, comprises:
I. many data lines are in order to the transmitting and displaying data;
Ii. multi-strip scanning line is in order to the transmission sweep signal;
Iii. many pixels that are configured to matrix form are electrically connected on these data lines and these sweep traces, and at least one first pixel of these pixels comprises an image sensing circuit, and this image sensing circuit comprises:
One the first transistor, its control end are electrically connected on the one scan line of these sweep traces;
One first electric capacity, its first end is electrically connected on first end of this first transistor, and second end is electrically connected on a voltage potential;
One photoinduction unit, its first end is electrically connected on first end of this first electric capacity, and second end is electrically connected on this voltage potential, and this photoinduction unit is used for producing leakage current according to intensity of illumination; And
One transistor seconds, its control end and first end are electrically connected on the adjacent scanning lines of this sweep trace, and second end is electrically connected on first end of this first electric capacity;
Iv. many sense wires, the sense wire in these sense wires is electrically connected on second end of this first transistor; And
V. an image process unit is electrically connected on these sense wires, is used for when this first transistor is unlocked reading through these sense wires the voltage of this first electric capacity.
2. display panel according to claim 1 is characterized in that, wherein this first pixel comprises in addition:
One the 3rd transistor, its control end is electrically connected on this sweep trace, and first end is electrically connected on a data line of these data lines;
One second electric capacity, first end of this second electric capacity are electrically connected on the 3rd transistorized second end, and second end of this second electric capacity is electrically connected on a common voltage source.
3. display panel according to claim 2 is characterized in that, wherein this voltage potential is this common voltage source.
4. display panel according to claim 2 is characterized in that, wherein this image process unit is according to this this first pixel show image of first capacitance voltage that reads control.
5. display panel according to claim 1 is characterized in that, wherein this voltage potential is an earth terminal.
6. display panel according to claim 1 is characterized in that, wherein this photoinduction unit comprises interdigital shape electrode.
7. display panel according to claim 1 is characterized in that, wherein this photoinduction unit is a photodiode or a photoinduction transistor.
8. display panel according to claim 1 is characterized in that, the two adjacent pixels of wherein going together are electrically connected on the different scanning line.
9. display panel according to claim 1 is characterized in that, the two adjacent pixels of wherein going together are electrically connected on same scan line.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100127536 | 2011-08-03 | ||
| TW100127536A TWI434271B (en) | 2011-08-03 | 2011-08-03 | Display panel capable of capturing images |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102385204A true CN102385204A (en) | 2012-03-21 |
| CN102385204B CN102385204B (en) | 2014-01-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110329830.5A Expired - Fee Related CN102385204B (en) | 2011-08-03 | 2011-10-24 | Display panel capable of picking up image |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102385204B (en) |
| TW (1) | TWI434271B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104113715A (en) * | 2013-04-22 | 2014-10-22 | 原相科技股份有限公司 | Image sensing method and image sensor |
| CN106981268A (en) * | 2017-05-17 | 2017-07-25 | 京东方科技集团股份有限公司 | A kind of image element circuit and its driving method, display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009125644A1 (en) * | 2008-04-10 | 2009-10-15 | シャープ株式会社 | Display device with optical sensor |
| CN101910980A (en) * | 2007-12-28 | 2010-12-08 | 夏普株式会社 | Display panel with built-in optical sensors and display device using same |
| US20110108704A1 (en) * | 2009-11-11 | 2011-05-12 | Samsung Electronics Co., Ltd. | Image sensors and methods of operating the same |
| CN102096523A (en) * | 2009-11-12 | 2011-06-15 | 株式会社半导体能源研究所 | Semiconductor device |
-
2011
- 2011-08-03 TW TW100127536A patent/TWI434271B/en not_active IP Right Cessation
- 2011-10-24 CN CN201110329830.5A patent/CN102385204B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101910980A (en) * | 2007-12-28 | 2010-12-08 | 夏普株式会社 | Display panel with built-in optical sensors and display device using same |
| WO2009125644A1 (en) * | 2008-04-10 | 2009-10-15 | シャープ株式会社 | Display device with optical sensor |
| US20110108704A1 (en) * | 2009-11-11 | 2011-05-12 | Samsung Electronics Co., Ltd. | Image sensors and methods of operating the same |
| CN102096523A (en) * | 2009-11-12 | 2011-06-15 | 株式会社半导体能源研究所 | Semiconductor device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104113715A (en) * | 2013-04-22 | 2014-10-22 | 原相科技股份有限公司 | Image sensing method and image sensor |
| CN104113715B (en) * | 2013-04-22 | 2017-03-01 | 原相科技股份有限公司 | Operating method thereof and image sensor |
| CN106981268A (en) * | 2017-05-17 | 2017-07-25 | 京东方科技集团股份有限公司 | A kind of image element circuit and its driving method, display device |
| WO2018209917A1 (en) * | 2017-05-17 | 2018-11-22 | 京东方科技集团股份有限公司 | Pixel circuit and driving method therefor, and display device |
| US10818226B2 (en) | 2017-05-17 | 2020-10-27 | Boe Technology Group Co., Ltd. | Pixel circuit, method for driving the same, and display apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI434271B (en) | 2014-04-11 |
| TW201308292A (en) | 2013-02-16 |
| CN102385204B (en) | 2014-01-08 |
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Granted publication date: 20140108 Termination date: 20201024 |