CN100517035C - Liquid crystal display - Google Patents
Liquid crystal display Download PDFInfo
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- CN100517035C CN100517035C CNB2006100616131A CN200610061613A CN100517035C CN 100517035 C CN100517035 C CN 100517035C CN B2006100616131 A CNB2006100616131 A CN B2006100616131A CN 200610061613 A CN200610061613 A CN 200610061613A CN 100517035 C CN100517035 C CN 100517035C
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- lcd
- film transistor
- layer
- sensor devices
- thin film
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Abstract
The invention relates to a liquid crystal display device which comprises a liquid crystal display panel, a light sensor, a brightness controlling circuit and a backlight circuit; wherein the liquid crystal panel comprises a thin film transistor array base board with a display area and a non-display area; a thin film transistor array forms within the display area; the light sensor is integrated in the non-display area of the thin film transistor array base board; the light sensor can sense the light of outer world and transforms light signals into electric signals; the brightness controlling circuit can receive the electric signals of the light sensor and transforms the electric signals into controlling signals; the backlight circuit can receive the controlling signals so as to regulate the backlight brightness. The liquid crystal display device can automatically regulate the backlight brightness.
Description
Technical field
The invention relates to a kind of LCD, particularly about regulating the LCD of brightness automatically.
Background technology
At present, LCD has replaced conventional cathode ray tube (the Cathode Ray Tube that is used for counter gradually, CRT) display, and, because characteristics such as the liquid crystal display utensil is light, thin, little, make its be fit to very much be applied to desktop PC, laptop computer, personal digital assistant (Personal Digital Assistant, PDA), in portable phone, TV and multiple office automation and the audio-visual equipment.
The operation of LCD environment can change with certain condition, difference as the place, the power of ambient light and headlamp switch etc., when the user observes show image under the varying environment briliancy, need the demonstration briliancy of LCD to be made corresponding adjustment, to obtain the visual experience of the most comfortable at the varying environment briliancy.
Seeing also Fig. 1, is a kind of synoptic diagram of LCD of prior art exposure.This LCD 100 comprises a driving governor 110, a power supply 150, a data driver that links to each other with this driving governor 110 and this power supply 150 respectively 120, a scanner driver that links to each other with this driving governor 110 and this power supply 150 respectively 130, a display panels 140 that links to each other with this data driver 120 and this scanner driver 130 and a backlight circuit 170 that links to each other with this power supply 150.This driving governor 110 is used to control this data driver 120 and this scanner driver 130 is exported a video signal respectively and the one scan signal is given this display panels 140, shows with the image of realizing this display panels 140.This power supply 150 provides electric energy required when driving to this data driver 120, scanner driver 130 and this backlight circuit 170 respectively.
But, when the brightness of these LCD 100 external environments of living in changes, this LCD 100 can not be responded to the brightness variation of external environment and adjust backlight illumination automatically, thereby the phenomenon of visual discomfort will appear in the user when observing display frame under different external environment brightness.
Summary of the invention
For solving the problem that will occur the phenomenon of visual discomfort when the different external environment brightness of above-mentioned LCD are observed display frame down, be necessary to provide a kind of LCD that can regulate backlight illumination automatically.
A kind of LCD, it comprises a display panels, one sensor devices, one intednsity circuit and a backlight circuit, this display panels comprises the thin-film transistor array base-plate with viewing area and non-display area, be formed with thin film transistor (TFT) array in this viewing area, this sensor devices is integrated in the non-display area of this thin-film transistor array base-plate, this sensor devices can be responded to ambient light, light signal is converted to electric signal, this intednsity circuit can receive the electric signal of this sensor devices, and this electrical signal conversion become control signal, this backlight circuit can be accepted this control signal to regulate backlight illumination.This sensor devices comprises a metal level that is formed on a substrate of glass, be formed on the gate insulator on the metal level, be formed on the photographic layer on this gate insulator at interval, be formed on this gate insulator, electrode structure in the gap of this photographic layer is formed on a planarization layer and a transparency conducting layer on this photographic layer and the electrode structure in regular turn, and this electrode structure is pectination, it links to each other with this photographic layer, and is electrically connected with this intednsity circuit.
Compared with prior art, LCD of the present invention adopts this light sensors sense brightness of outside light, light signal is converted to electric signal is sent to this intednsity circuit, and this backlight liquid crystal display is regulated by this intednsity circuit, can regulate this backlight liquid crystal display brightness automatically, thereby vision is more comfortable when the user observes picture.In addition, this sensor devices structure is integrated in the non-display area of this thin-film transistor array base-plate when can form thin film transistor (TFT) array, therefore, and also manufacturing step that need not be other, and then make and make easyly, and save manufacturing cost.
Description of drawings
Fig. 1 is the synoptic diagram of the LCD of prior art.
Fig. 2 is the synoptic diagram of LCD of the present invention.
Fig. 3 is the synoptic diagram of the liquid crystal display face of LCD shown in Figure 2.
Fig. 4 is the diagrammatic cross-section of cuing open along profile line IV-IV of thin film transistor (TFT) shown in Figure 3.
Fig. 5 is that the partial structurtes of sensor devices shown in Figure 3 are amplified floor map.
Fig. 6 is the diagrammatic cross-section of cuing open along profile line VI-VI of sensor devices 241 shown in Figure 5.
Fig. 7 is the improvement synoptic diagram of LCD of the present invention.
Fig. 8 is the improvement synoptic diagram of LCD of the present invention.
Embodiment
Seeing also Fig. 2, is the synoptic diagram of the LCD of the present invention's one better embodiment.This LCD 200 comprises that driving governor 210, a power supply 250, a data driver that links to each other with this driving governor 210 and power supply 250 respectively 220, a scanner driver 230, that links to each other with this driving governor 210 and power supply 250 respectively are integrated in intednsity circuit 231, a display panels 240, a sensor devices 241 and a backlight circuit 270 that links to each other with this power supply 250 of scanner driver 230.This sensor devices 241 is arranged on this display panels 240, and it responds to the signal of ambient light, and the signal of sensing is sent to this intednsity circuit 231.The signal that this intednsity circuit 231 is accepted from this sensor devices 241 detects brightness of outside light, and controls backlight circuit 270 according to the result who detects.
Seeing also Fig. 3, is the synoptic diagram of this display panels 240.This display panels 240 comprises a thin-film transistor array base-plate 245 and colored filter substrate (figure does not show), this thin-film transistor array base-plate 245 comprises a viewing area 2451 and a non-display area 2452, this non-display area 2452 be positioned at this viewing area 2451 around, this viewing area 2451 is provided with thin film transistor (TFT) 246 arrays, this non-display area 2452 is located the black matrix 243 that this non-display area 2452 is provided with this thin-film transistor array base-plate 245 and colored filter substrate applying rear defence leak-stopping light with these 2451 adjacent boundaries, viewing area, should be provided with this sensor devices 241 by this thin-film transistor array base-plate 245 of black matrix 243 belows, the zone that should deceive the corresponding sensor devices 241 of matrix 243 is provided with a perforate (figure does not show), to guarantee the absorption of 241 pairs of surround lightings of this sensor devices.
Seeing also Fig. 4, is the diagrammatic cross-section of cuing open along profile line IV-IV of thin film transistor (TFT) 246 shown in Figure 3.This thin film transistor (TFT) 246 comprises a grid 2462 that is formed on the substrate of glass 247, be formed on the gate insulator 2463 on this substrate of glass 247 and the grid 2462, be formed on the semiconductor layer 2464 on this gate insulator 2463, be formed on source electrode and drain electrode 2465 and 2466 on this gate insulator 2463 and the semiconductor layer 2464, be formed on this semiconductor layer 2464, source electrode and drain electrode 2465,2466 with gate insulator 2463 on a planarization layer 2467 and be formed on a pixel electrode 2468 in this planarization layer 2467 and the drain electrode 2466.This semiconductor layer 2464 comprises amorphous silicon layer (figure does not show) and doped amorphous silicon layer (figure does not show), these two layers is to form an amorphous silicon layer on this gate insulator 2463, carry out one doping process again, this amorphous silicon layer is mixed and the amorphous silicon layer and the doped amorphous silicon layer that form.
See also Fig. 5 and Fig. 6, Fig. 5 is that the partial structurtes of sensor devices shown in Figure 3 are amplified floor map, and Fig. 6 is the diagrammatic cross-section of cuing open along profile line VI-VI of sensor devices 241 shown in Figure 5.This sensor devices 241 comprises and is formed on this substrate of glass 247, be positioned at the metal level 2412 that constitutes with one deck and identical material with this grid 2462, be formed on this gate insulator 2463 on the metal level 2412, be formed on a photographic layer 2414 on this gate insulator 2463 at interval, be formed on this gate insulator 2463, the electrode structure 2415 in these photographic layer 2414 gaps, be formed on this planarization layer 2467 on this photographic layer 2414 and the electrode structure 2415 and be formed on a transparency conducting layer 2418 on this planarization layer 2467.This photographic layer 2414 is positioned at same one deck with this semiconductor layer 2464, its material is the amorphous silicon (material of α-Si:H), this electrode structure 2415 is positioned at one deck and by identical material with this source electrode and drain electrode 2465,2466 and constitutes, and this transparency conducting layer 2418 is positioned at one deck and by identical material with this pixel electrode 2468 and constitutes.
Wherein, this metal level 2412 is used to block the light from backlight, and this photographic layer 2414 is to make because of amorphous silicon, and meeting generation electronics electricity hole was right after this photographic layer 2414 was subjected to the ambient light irradiation, conduct this electrode structure 2415, light signal is converted to electric signal is sent to this intednsity circuit 231.This electrode structure 2415 is designed to pectination, thereby improves its sensitivity.
This sensor devices 241 and thin film transistor (TFT) 246 arrays can be integrated in respectively in the non-display area 2452 of this thin-film transistor array base-plate 245 and in the viewing area 2451 synchronously as can be known by said structure.
Compared with prior art, above-mentioned LCD 200 adopts this sensor devices 241 induction brightness of outside light, light signal is converted to electric signal is sent to this intednsity circuit 231, and backlight adjusting the by 231 pairs of these LCD 200 of this intednsity circuit, can regulate the backlight illumination of this LCD 200 automatically, thereby vision is more comfortable when the user observes picture.In addition, these sensor devices 241 structures can be integrated on the non-display area 2452 of this thin-film transistor array base-plate 245 when forming thin film transistor (TFT) 246 arrays, therefore, and also manufacturing step that need not be other, and then make that manufacturing is easy, and save manufacturing cost.
But it is described that LCD of the present invention is not limited to above-mentioned embodiment.As shown in Figure 6, these sensor devices 341 structures can have following described improvement: form photographic layer 3414 on these gate insulator 3463 whole surfaces, formation one is the electrode structure 3415 of pectination on this photographic layer 3414.Also as shown in Figure 7, this sensor devices 441 can be integrated on the thin-film transistor array base-plate 445, the peripheral region of this black matrix 443.
Claims (10)
1. LCD, it comprises a display panels and a backlight circuit, this display panels comprises the thin-film transistor array base-plate with viewing area and non-display area, be formed with thin film transistor (TFT) array in this viewing area, it is characterized in that: this LCD also comprises a sensor devices and an intednsity circuit, this sensor devices is integrated in the non-display area of this thin-film transistor array base-plate, this sensor devices can be responded to ambient light, light signal is converted to electric signal, this intednsity circuit is used to receive the electric signal of this sensor devices, and this electrical signal conversion become control signal, this backlight circuit is used to accept this control signal to regulate backlight illumination, this sensor devices comprises a metal level that is formed on a substrate of glass, be formed on the gate insulator on the metal level, be formed on the photographic layer on this gate insulator at interval, be formed on this gate insulator, electrode structure in the gap of this photographic layer, be formed on a planarization layer and a transparency conducting layer on this photographic layer and the electrode structure in regular turn, this electrode structure is pectination, it links to each other with this photographic layer, and is electrically connected with this intednsity circuit.
2. LCD as claimed in claim 1 is characterized in that: thin film transistor (TFT) comprises a grid that is formed on this substrate of glass, and this grid is positioned at one deck and by identical material with this metal level and constitutes.
3. LCD as claimed in claim 2, it is characterized in that: this thin film transistor (TFT) further comprises semi-conductor layer, this semiconductor layer and photographic layer are respectively formed on this grid and the metal level, and insulate by a gate insulator, this photographic layer and this semiconductor layer are positioned at same one deck, and are made of identical material.
4. LCD as claimed in claim 3 is characterized in that: this photographic layer material is the amorphous silicon material, and is disposed on this gate insulator.
5. LCD as claimed in claim 4, it is characterized in that: this thin film transistor (TFT) further comprises one source pole and the drain electrode that is formed on this semiconductor layer and this gate insulator, this source electrode and drain electrode and electrode structure are positioned at same one deck, and are made of identical material.
6. LCD as claimed in claim 5 is characterized in that: this thin film transistor (TFT) further comprises a planarization layer that is formed on this source electrode and drain electrode, the semiconductor layer.
7. LCD as claimed in claim 6, it is characterized in that: this thin film transistor (TFT) further comprises a pixel electrode that is formed in this planarization layer and the drain electrode, this sensor devices further comprises a transparency conducting layer that is formed on the planarization layer, this pixel electrode and this transparency conducting layer are positioned at same one deck, and are made of identical material.
8. LCD as claimed in claim 1 is characterized in that: further comprise a black matrix that prevents light leak, this black arranged in matrix is at this viewing area of this thin-film transistor array base-plate and the place, adjacent boundary of non-display area.
9. LCD as claimed in claim 8 is characterized in that: this sensor devices is arranged on this black matrix below, and should black matrix be provided with an opening with the corresponding part of this sensor devices.
10. LCD as claimed in claim 8 is characterized in that: this sensor devices is arranged on around this black matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100616131A CN100517035C (en) | 2006-07-12 | 2006-07-12 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100616131A CN100517035C (en) | 2006-07-12 | 2006-07-12 | Liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101105613A CN101105613A (en) | 2008-01-16 |
| CN100517035C true CN100517035C (en) | 2009-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100616131A Expired - Fee Related CN100517035C (en) | 2006-07-12 | 2006-07-12 | Liquid crystal display |
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| Country | Link |
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| CN (1) | CN100517035C (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614900B (en) * | 2009-07-22 | 2011-01-05 | 昆山龙腾光电有限公司 | Liquid crystal display panel and liquid crystal display device |
| KR101319349B1 (en) * | 2009-12-21 | 2013-10-16 | 엘지디스플레이 주식회사 | Liquid Crystal Display Device and Method for Controlling Automatic Brightness |
| TWI528823B (en) * | 2012-08-28 | 2016-04-01 | 緯創資通股份有限公司 | Device and method for displaying and adjusting image information |
| JP6578020B2 (en) * | 2015-12-28 | 2019-09-18 | アルプスアルパイン株式会社 | Input device |
| CN106098707B (en) * | 2016-08-08 | 2019-01-15 | 京东方科技集团股份有限公司 | Array substrate and preparation method thereof and display device |
| CN107300812B (en) * | 2017-05-12 | 2021-08-06 | 惠科股份有限公司 | Display panel, manufacturing method of display panel and display device |
| CN107515488B (en) * | 2017-08-01 | 2020-06-23 | 惠科股份有限公司 | Display panel |
| CN111373313B (en) * | 2017-09-28 | 2023-06-16 | 深圳传音通讯有限公司 | Display panel assembly, mobile terminal, image generation method, and storage medium |
| CN108333812A (en) * | 2018-02-13 | 2018-07-27 | 京东方科技集团股份有限公司 | Display base plate, display panel and its display control method, display device |
| CN108681133B (en) * | 2018-03-23 | 2021-09-03 | 京东方科技集团股份有限公司 | Display panel, display method and vehicle-mounted head-up display system |
| CN108521481B (en) * | 2018-03-30 | 2020-08-21 | Oppo广东移动通信有限公司 | Electronic device |
| CN109753113B (en) * | 2018-05-31 | 2020-10-30 | 北京字节跳动网络技术有限公司 | Electronic equipment and light sensation device thereof |
| CN109375402B (en) * | 2018-11-01 | 2021-11-02 | Oppo广东移动通信有限公司 | Display components and electronic equipment |
| CN111128027A (en) * | 2019-12-30 | 2020-05-08 | 上海天马微电子有限公司 | Display module and backlight brightness monitoring method |
| CN114582294B (en) * | 2020-11-30 | 2023-08-15 | 京东方科技集团股份有限公司 | Display device and medical equipment |
| CN115064575A (en) * | 2022-07-08 | 2022-09-16 | Tcl华星光电技术有限公司 | display module |
-
2006
- 2006-07-12 CN CNB2006100616131A patent/CN100517035C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101105613A (en) | 2008-01-16 |
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Granted publication date: 20090722 Termination date: 20170712 |