CN101452161B - Lcd - Google Patents
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- CN101452161B CN101452161B CN2007101248254A CN200710124825A CN101452161B CN 101452161 B CN101452161 B CN 101452161B CN 2007101248254 A CN2007101248254 A CN 2007101248254A CN 200710124825 A CN200710124825 A CN 200710124825A CN 101452161 B CN101452161 B CN 101452161B
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Abstract
The present invention provides a liquid crystal display which comprises a first substrate and a second substrate. The first substrate comprises a plurality of unicolor areas. The second substrate comprises a plurality of scanning lines which are parallel with each other and a plurality of data lines that are parallel with each other. The plurality of scanning lines and the plurality of data lines are intersected perpendicularly with an insulation mode for defining a plurality of pixel units. Each pixel unit is corresponding with one unicolor area. Furthermore one pixel unit comprises a thin film transistor and at least one pixel electrode. The grid of thin film transistor is connected with the scanning line. The source is connected with the data line. The drain is connected with the pixel electrode, wherein, each pixel unit corresponding with at least one unicolor area is further connected with a pressure dividing resistor between the drain of thin film transistor and the pixel electrode. The liquid crystal display device according to the invention can adjust color temperature.
Description
Technical field
The invention relates to a kind of LCD.
Background technology
LCD is characteristics such as radiation is low, power consumption is little, thin thickness because of having, and have been widely used in Modern Electronic display devices such as TV, notebook computer.Along with development of technology, the requirement of people's LCD picture display effect is also more and more higher, and particularly the colour temperature to LCD has specific requirement.
Seeing also Fig. 1, is a kind of circuit diagram of prior art LCD.This LCD 100 comprises scan driving circuit 110, one data drive circuits 120 and a display panels 130.This scan drive circuit 110 is used to scan this display panels 130, and this data drive circuit 120 is used for providing gray scale voltage to this display panels 130 when this display panels 130 is scanned.
This display panels 130 comprises one second substrate (figure does not show), one first substrate (figure does not show), and one is arranged on the liquid crystal layer (figure does not show) between this second substrate and this first substrate.This second substrate comprises many sweep traces that are parallel to each other 111, many be parallel to each other and with the vertical data line 121 of this sweep trace 111 insulation, many thin film transistor (TFT) 101 and a plurality of pixel electrodes 102 that are positioned at this sweep trace 111 and this data line 121 infalls.The grid of this thin film transistor (TFT) 101 is connected to this sweep trace 111, and source electrode is connected to this data line 121, and drain electrode is connected to this pixel electrode 102.This sweep trace 111 all is connected to this scan drive circuit 110, and this data line 121 all is connected to this data drive circuit 120.
This first substrate comprise a plurality of monochromatic areas (figure do not show) and folded be located on these a plurality of monochromatic areas more than individual common electrode layer 103.These a plurality of monochromatic areas are a plurality of filter units, are respectively a plurality of redness (R) filter unit, a plurality of green (G) filter unit and a plurality of blueness (B) filter unit.Each pixel electrode 102 on this second substrate and the thin film transistor (TFT) that is connected 101 corresponding monochromatic areas, mixed-color light penetrate the monochromatic light that this monochromatic areas is filtered into a correspondence afterwards.
The principle of work of this display panels 130 is as follows: at first, this scan drive circuit 110 applies a plurality of sweep signals successively to each sweep trace 111, makes the source electrode and drain electrode conducting of all thin film transistor (TFT)s 101 that are connected with this sweep trace 111.At this moment, the gray scale voltage that this data drive circuit 120 is provided exports this pixel electrode 102 to via the thin film transistor (TFT) 101 of this data line 121 and conducting, and between this pixel electrode 102 and this public electrode 103, forming an electric field, the liquid crystal molecule that is arranged in this electric field twists because of the electric field force effect.Under same gray level voltage, the deflection angle of liquid crystal molecule is identical, after the white light that backlight module sends penetrates this liquid crystal molecule, be filtered into a corresponding monochromatic light after penetrating each monochromatic areas again, therefore and mixed-color light in actual this monochromatic penetrance that should be of penetrance of this monochromatic areas.
Seeing also Fig. 2, is the synoptic diagram that concerns of the demonstration GTG of this LCD 100 and different color light penetrance.Wherein transverse axis is represented GTG, and the longitudinal axis is represented the penetrance of the light of different wave length, and unit is number percent (%).Curve 202, curve 204, curve 206 and curve 208 are represented the penetrance of this LCD 100 mixed-color light, ruddiness, green glow and blue light when showing different GTG respectively, under identical GTG, the penetrance (curve 208) of ruddiness penetrance (curve 204), green glow penetrance (curve 206) and blue light and the penetrance of mixed-color light (curve 202) and inequality, the penetrance of the penetrance of this blue light under the different GTGs all penetrance than this ruddiness and green glow is big.
Usually, when mixed-color light penetrates liquid crystal molecule, in order to show the GTG of expection, the corresponding gray scale voltage of GTG that this driving circuit can provide mixed-color light to these many data lines 121 according to the GTG of mixed-color light and the relation of penetrance.And because the penetrance of the penetrance of the monochromatic light of different wave length and mixed-color light and inconsistent, and the penetrance of this blue light is greater than the penetrance of this mixed-color light, therefore the GTG of these LCD 100 actual displayed is for penetrating the mixed GTG of different monochromatic light of back, expect that GTG is blue partially, promptly the colour temperature of this LCD 100 is blue partially.And different user to the colour temperature of LCD require inconsistently, what it was required may be white or red partially or green partially other colour temperature that waits, so this liquid crystal indicator 100 can not be adjusted colour temperature according to the requirement of different user.
Summary of the invention
In order to solve the problem that the prior art LCD is difficult to realize the consumer premise colour system, be necessary to provide a kind of LCD of adjustable color temperature.
A kind of LCD, it comprises one first substrate and one second substrate, this first substrate comprises a plurality of monochromatic areas; This second substrate comprises many sweep traces that are parallel to each other and many data lines that are parallel to each other, this multi-strip scanning line intersects to define a plurality of pixel cells with these many data lines are vertically insulated, the corresponding monochromatic areas of each pixel cell, and each pixel cell comprises a thin film transistor (TFT) and at least one pixel electrode, the grid of this thin film transistor (TFT) connects this sweep trace, its source electrode connects this data line, its drain electrode is connected to this pixel electrode, wherein, each pixel cell of at least one homochromy monochromatic areas correspondence is further connected a divider resistance between this thin film transistor (TFT) drain electrode and this pixel electrode.
A kind of LCD, it comprises one first substrate and one second substrate, this first substrate comprises a plurality of monochromatic areas; This second substrate comprises many sweep traces that are parallel to each other and many data lines that are parallel to each other, this multi-strip scanning line intersects to define a plurality of pixel cells with these many data lines are vertically insulated, the corresponding monochromatic areas of each pixel cell, and each pixel cell comprises a thin film transistor (TFT) and at least one pixel electrode, the gray scale voltage of this data line output exports this pixel electrode to via this thin film transistor (TFT), wherein, each pixel cell of at least one homochromy monochromatic areas correspondence further is provided with a divider resistance and reduces actual gray voltage on this pixel electrode.
A kind of LCD, it comprises a plurality of pixel cells, each pixel cell is used for showing a kind of monochrome, each pixel cell comprises a thin film transistor (TFT) and at least one pixel electrode, wherein, comprise at least one divider resistance respectively at least a monochromatic each corresponding pixel cell, this at least one divider resistance is serially connected between this thin film transistor (TFT) and this at least one pixel electrode.
Compared to prior art, the pixel cell of this at least one homochromy monochromatic areas correspondence is provided with divider resistance, then the voltage of the pixel electrode reality of this pixel cell is less than the gray scale voltage that this LCD provides, corresponding different GTGs, the actual penetrance of this at least one homochromy monochromatic areas all reduces, therefore, and after each monochromatic light mixes, change has taken place compared to the color of former mixed light in the color that has changed this mixed light, thereby can realize the colour temperature of predetermined this LCD.
Description of drawings
Fig. 1 is a kind of circuit diagram of prior art LCD.
Fig. 2 is the synoptic diagram that concerns of the demonstration GTG of LCD shown in Figure 1 and different color light penetrance.
Fig. 3 is the circuit diagram of LCD first embodiment of the present invention.
Fig. 4 is the synoptic diagram that concerns of the demonstration GTG of LCD shown in Figure 3 and different color light penetrance.
Fig. 5 is the circuit diagram of LCD second embodiment of the present invention.
Embodiment
Seeing also Fig. 3, is the circuit diagram of LCD first embodiment of the present invention.This LCD 300 comprises scan driving circuit 310, one data drive circuits 320 and a display panels 380.This scan drive circuit 310 is used to scan this display panels 380, and this data drive circuit 320 is used for providing gray scale voltage for this display panels 380 when this display panels 380 is scanned.
This display panels 380 comprises one second substrate (figure does not show), and one first substrate (figure does not show) and is arranged on the liquid crystal layer (figure does not show) between this two substrate.This first substrate comprises a plurality of public electrodes 303 that a plurality of monochromatic areas (figure does not show) and contiguous this liquid crystal layer are provided with.These a plurality of monochromatic areas are a plurality of filter units, and are respectively a plurality of redness (R) filter unit, a plurality of green (G) filter unit and a plurality of blueness (B) filter unit.
This second substrate comprises many sweep traces that are parallel to each other 311 and many data lines that are parallel to each other 321.This multi-strip scanning line 311 all is connected to this scan drive circuit 310, and these many data lines 321 all are connected to this data drive circuit 320, and this multi-strip scanning line 311 intersects vertically with these many data lines 321 mutually insulateds, to define a plurality of pixel cells 330.330 pairs of each pixel cells monochromatic areas on should first substrate, and each pixel cell 330 comprises a thin film transistor (TFT) 331, a divider resistance 332 and a pixel electrode 333.The grid of this thin film transistor (TFT) 301 (not indicating) is connected to this sweep trace 311, its source electrode (not indicating) is connected to this data line 321, and its drain electrode (not indicating) is connected to this pixel electrode 333 via the divider resistance (Rr or Rg or Rb) of each pixel cell correspondence.The resistance value of the divider resistance of not homochromy monochromatic areas correspondence is all different, promptly the resistance value to divider resistance 332 that should red filter unit is Rr, resistance value to divider resistance 332 that should green filter unit is Rg, is that Rb is all different to the resistance value of divider resistance 332 that should blue filter unit.
These display panels 380 principle of work are as follows: at first, this scan drive circuit 310 applies a plurality of sweep signals successively to each bar sweep trace 311, makes the source electrode and drain electrode conducting of all thin film transistor (TFT)s 301 that are connected with this sweep trace 311.Simultaneously, the gray scale voltage of the mixed-color light correspondence that this data drive circuit 320 is provided exports this pixel electrode 333 to via the thin film transistor (TFT) 301 and the corresponding divider resistance of this data line 321, conducting successively, and between this pixel electrode 333 and this public electrode 303, form an electric field, control the liquid crystal deflecting element of each monochromatic areas correspondence, mixed-color light penetrates the monochromatic light that is filtered into a correspondence after this liquid crystal molecule and this monochromatic areas, therefore, mixed-color light is in actual this monochromatic penetrance that should be of penetrance of this monochromatic areas.
This LCD 300 can be passed through the resistance value (Rr or Rg or Rb) of the divider resistance 332 of the not homochromy monochromatic areas correspondence of control, to set the actual gray voltage of not homochromy monochromatic areas, thereby control each monochromatic actual penetrance, realize different predetermined colour temperatures.Now to realize that white color temperature is the predetermined colour temperature that example is introduced this display panels 380: in the processing procedure of this display panels 380, make the resistance value of the divider resistance 332 that the pixel electrode of not homochromy monochromatic areas correspondence connects, the pass of setting the resistance value of these a plurality of divider resistances 332 is: Rb＞Rg＞Rr, when then exporting same gray scale voltage to each pixel cell 330, the divider resistance 332 of corresponding not homochromy monochromatic areas is adjusted the actual gray voltage of pixel cell 330 according to its different resistance value, thereby adjust the size of corresponding electric field, promptly adjust the liquid crystal molecule windup-degree of the liquid crystal layer of this electric field correspondence, thereby the monochromatic penetrance of difference is adjusted into unanimity.
Seeing also Fig. 4, is the synoptic diagram that concerns of the demonstration GTG of this LCD 300 and different color light penetrance.Transverse axis is represented GTG, and the longitudinal axis is represented the penetrance of the light of different wave length, and unit is number percent (%).Curve 402, curve 404, curve 406 and curve 408 are represented the penetrance of this LCD 300 mixed-color light, ruddiness, green glow and blue light when showing different GTG respectively.Under identical GTG, because being this divider resistance of Rb, resistance value dragged down the voltage of the pixel electrode 333 of corresponding blue filter unit, then the actual penetrance of this blue light reduces.And resistance to be this divider resistance (Rr, Rg) of Rr, Rg corresponding respectively that adjusted should the redness filter unit and the actual deflection degree of the liquid crystal molecule of this green filter unit correspondence, when adjusting different GTG, the actual penetrance of this each coloured light.The penetrance (curve 408) of ruddiness penetrance (curve 404), green glow penetrance (curve 406), blue light and the penetrance (curve 402) of mixed-color light are basic to be overlapped, thereby makes this LCD 300 realize white color temperature.
In sum, the divider resistance 332 by different resistance values is set is adjusted the deflection efficiency of liquid crystal molecules, makes corresponding same GTG, and different monochromatic penetrances are consistent, thereby different monochromatic light have been realized white color temperature after mixing.If want to realize the colour temperature that other is predetermined, then only need further to adjust the resistance value size of divider resistance 332 of this difference monochromatic areas correspondence or the magnitude relationship that changes resistance value (Rr, Rg, the Rb) three of different divider resistances 332 and get final product.
Compared to prior art, because these pixel cell 330 corresponding monochromatic areas of all kinds all are provided with divider resistance 332, then the divider resistance 332 of the corresponding different resistance values of the gray scale voltage of pixel electrode 333 reality of this pixel cell is adjusted, during each GTG of correspondence, the corresponding not deflection difference of the liquid crystal molecule of homochromy monochromatic areas, this different color light blue light then, the actual penetrance of ruddiness and green glow is changed by the influence of this divider resistance 332 all, after this each monochromatic light mixes, the colour temperature of this LCD 300 can correspondingly change, thereby can adjust the colour temperature of this LCD 300, realize the required colour temperature of user.
Seeing also Fig. 5, is the circuit diagram of LCD second embodiment of the present invention.This LCD 400 is basic identical with the structure of this LCD 300, its difference is: this LCD 400 only is provided with a divider resistance 432 in the pixel cell 430 of this blueness filter unit correspondence, to change the actual penetrance of this blue light, thereby, reduce the blue partially temperature that changes this LCD 400.
But, the invention is not restricted to above-mentioned embodiment, the monochromatic areas of this LCD can be red, green, blue and white, and corresponding pixel cell is provided with divider resistance in the pixel cell of the monochromatic areas correspondence of the monochromatic areas of any one color or two kinds of colors therein, to change this monochromatic actual penetrance, can change this LCD colour temperature.This LCD can be penetrating LCD or is semi-penetrated semi-reflected liquid crystal display, when this LCD is semitransparent and half-reflective liquid crystal display, this each pixel cell comprises an echo area pixel electrode and a penetrating region pixel electrode, can connect a divider resistance changing the actual penetrance of penetrating region liquid crystal molecule at the penetrating region pixel electrode of the pixel cell of each monochromatic areas correspondence, thereby change this LCD colour temperature.
Claims (10)
1. LCD, it comprises one first substrate and one second substrate, this first substrate comprises a plurality of monochromatic areas; This second substrate comprises many sweep traces that are parallel to each other and many data lines that are parallel to each other, this multi-strip scanning line intersects to define a plurality of pixel cells with these many data lines are vertically insulated, the corresponding monochromatic areas of each pixel cell, and each pixel cell comprises a thin film transistor (TFT) and at least one pixel electrode, the grid of this thin film transistor (TFT) connects this sweep trace, its source electrode connects this data line, its drain electrode is connected to this pixel electrode, it is characterized in that: each pixel cell of at least one homochromy monochromatic areas correspondence is further connected a divider resistance between this thin film transistor (TFT) drain electrode and this pixel electrode.
2. LCD as claimed in claim 1 is characterized in that: these a plurality of monochromatic areas are respectively a plurality of red filter units, a plurality of blue filter unit and a plurality of green filter unit.
3. LCD as claimed in claim 2 is characterized in that: each pixel cell that should a plurality of blue filter units all is provided with a divider resistance is connected between this thin film transistor (TFT) drain electrode and this pixel electrode.
4. LCD as claimed in claim 2 is characterized in that: each pixel cell all is provided with a divider resistance.
5. LCD as claimed in claim 4 is characterized in that: to the resistance of divider resistance that should blue filter unit greater than to should red filter unit and the resistance of the divider resistance of this green filter unit.
6. LCD as claimed in claim 1 is characterized in that: this LCD comprises that further a liquid crystal layer is clamped between this first substrate and this second substrate.
7. LCD as claimed in claim 1, it is characterized in that: this LCD is worn the semi-reflective LCD for half, this pixel cell comprises an echo area pixel electrode and a penetrating region pixel electrode, the divider resistance of connecting between this penetrating region pixel electrode and the drain electrode of this thin film transistor (TFT).
8. LCD as claimed in claim 1 is characterized in that: these a plurality of monochromatic areas are respectively a plurality of red filter units, a plurality of blue filter unit, a plurality of green filter unit and a plurality of white filter unit.
9. LCD, it comprises one first substrate and one second substrate, this first substrate comprises a plurality of monochromatic areas; This second substrate comprises many sweep traces that are parallel to each other and many data lines that are parallel to each other, this multi-strip scanning line intersects to define a plurality of pixel cells with these many data lines are vertically insulated, the corresponding monochromatic areas of each pixel cell, and each pixel cell comprises a thin film transistor (TFT) and at least one pixel electrode, the gray scale voltage of this data line output exports this pixel electrode to via this thin film transistor (TFT), and it is characterized in that: each pixel cell of at least one homochromy monochromatic areas correspondence further is provided with a divider resistance to reduce the actual gray voltage on this pixel electrode.
10. LCD, it comprises a plurality of pixel cells, each pixel cell is used for showing a kind of monochrome, each pixel cell comprises a thin film transistor (TFT) and at least one pixel electrode, it is characterized in that: comprise at least one divider resistance respectively at least a monochromatic each corresponding pixel cell, this at least one divider resistance is serially connected between this thin film transistor (TFT) and this at least one pixel electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101248254A CN101452161B (en) | 2007-12-05 | 2007-12-05 | Lcd |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101248254A CN101452161B (en) | 2007-12-05 | 2007-12-05 | Lcd |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101452161A CN101452161A (en) | 2009-06-10 |
| CN101452161B true CN101452161B (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101248254A Expired - Fee Related CN101452161B (en) | 2007-12-05 | 2007-12-05 | Lcd |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998832A (en) * | 2012-10-09 | 2013-03-27 | 江苏和成显示科技股份有限公司 | Color temperature compensation mirror |
| CN104062788A (en) * | 2014-07-10 | 2014-09-24 | 信利半导体有限公司 | Pixel structure, array substrate and liquid crystal display panel |
| CN106935221B (en) | 2017-05-18 | 2020-04-14 | 京东方科技集团股份有限公司 | Pixel driving circuit, array substrate and display device |
| CN114879396B (en) * | 2022-05-23 | 2023-03-31 | 惠科股份有限公司 | Pixel driving structure, preparation method and display panel |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1258357A (en) * | 1998-03-19 | 2000-06-28 | 精工爱普生株式会社 | Liquid crystal display device and projection display device |
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2007
- 2007-12-05 CN CN2007101248254A patent/CN101452161B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1258357A (en) * | 1998-03-19 | 2000-06-28 | 精工爱普生株式会社 | Liquid crystal display device and projection display device |
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| CN101452161A (en) | 2009-06-10 |
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Owner name: QIMEI ELECTRONIC CO LTD Free format text: FORMER OWNER: INNOLUX DISPLAY GROUP |
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Effective date of registration: 20110221 Address after: 518109 Longhua, Shenzhen, town, Foxconn science and Technology Industrial Park E District, building 1, floor 4, Applicant after: Qunkang Technology (Shenzhen) Co., Ltd. Co-applicant after: Chimei Optoelectronics Co., Ltd. Address before: 518109 Longhua, Shenzhen, town, Foxconn science and Technology Industrial Park E District, building 1, floor 4, Applicant before: Qunkang Technology (Shenzhen) Co., Ltd. Co-applicant before: Innolux Display Group |
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