CN101699555A - Liquid crystal display and terminal - Google Patents
Liquid crystal display and terminal Download PDFInfo
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- CN101699555A CN101699555A CN200910177991A CN200910177991A CN101699555A CN 101699555 A CN101699555 A CN 101699555A CN 200910177991 A CN200910177991 A CN 200910177991A CN 200910177991 A CN200910177991 A CN 200910177991A CN 101699555 A CN101699555 A CN 101699555A
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Abstract
The invention discloses a liquid crystal display and a terminal. The liquid crystal display comprises a liquid crystal display glass panel, a driving chip, a backlight unit which is used for receiving backlight current and transmitting backlight light to the liquid crystal display glass panel, an analog-to-digital converter, an ambient light sensor circuit integrated on the driving chip and a backlight control unit, wherein, the ambient light sensor circuit is used for receiving external ambient light and outputting analog light current or analog light voltage to the analog-to-digital converter according to the external ambient light; the analog-to-digital converter is used for receiving analog light current or analog light voltage, and converting the analog light current or analog light voltage into digital light current or digital light voltage; the backlight control unit is used for receiving the digital light current or digital light voltage output by the analog-to-digital converter and adjusting the size of the backlight current which is output to a backlight unit according to the changing direction of the digital light current or the digital light voltage in the same direction. The embodiment of the invention can realize the change of display brightness of the liquid crystal display along with the change of the external light intensity.
Description
Technical field
The present invention relates to technical field of liquid crystal display, be specifically related to a kind of LCDs and terminal.
Background technology
LCDs (LCD, Liquid Crystal Display) is a kind of display screen that adopts liquid crystal control penetrability technology to realize color, LCDs has advantages such as display image is clear, energy-conservation, is widely used in terminals such as mobile phone, player.
LCDs of the prior art mainly is made up of back light unit, LCD face glass, chip for driving.Wherein, back light unit provides light backlight to the LCD face glass, the LCD face glass comprises upper glass and lower-glass, liquid crystal molecule and RGB (RGB, Red, Green are arranged in the intermediate course between upper glass and the lower-glass, Blue) color filter film, liquid crystal molecule deflects under the row, column drive signal effect of LCD chip for driving output, and control plays the light valve door from the transmitance of the light backlight of back light unit.See through light R filter coating, G filter coating, the B filter coating by RGB sub-pixel correspondence respectively again behind the liquid crystal molecule, thus different colors.
Wherein, chip for driving is connected with the main control chip of terminal, the viewdata signal that the main control chip of receiving terminal is sent here, and to the suitable row, column drive signal of LCD face glass output, the liquid crystal molecule of respective pixel in the control LCD face glass, thereby display image.
The inventor finds in the process of research prior art, terminals such as existing mobile phone can change the brightness of LCDs by the power of regulating the light backlight that the LCD back light unit sends, but the LCDs in the existing terminal can't be adjusted display brightness automatically, thereby can't realize automatic energy saving.
Summary of the invention
The invention provides a kind of LCDs and the terminal that can adjust brightness according to external environment light automatically, thereby realize automatic energy saving.
The LCDs that the embodiment of the invention provides comprises: the LCDs face glass; Chip for driving is used to receive viewdata signal, to LCDs face glass output row, column drive signal; Back light unit is used to receive back facet current, launches light backlight to the LCDs face glass; Analog to digital converter and the surround lighting perception circuit that is integrated on the chip for driving; Surround lighting perception circuit is used to receive external environment condition light, and according to external ambient light alignment analog to digital converter output simulated light electric current or simulated light voltage; Analog to digital converter is used to receive simulated light electric current or simulated light voltage, and simulated light electric current or simulated light voltage are converted to digital light electric current or digital light voltage; Backlight control unit is used to receive digital light electric current or the digital light voltage that analog to digital converter is exported, and according to the direction of digital light electric current or digital light change in voltage, adjusts the size to the back facet current of back light unit output in the same way.
The embodiment of the invention also provides a kind of terminal, and this terminal comprises: LCDs, and LCDs comprises: the LCDs face glass; Chip for driving is used to receive viewdata signal, to LCDs face glass output row, column drive signal; Back light unit is used to receive back facet current, launches light backlight to the LCDs face glass; Analog to digital converter and the surround lighting perception circuit that is integrated on the chip for driving; Surround lighting perception circuit is used to receive external environment condition light, and according to external ambient light alignment analog to digital converter output simulated light electric current or simulated light voltage; Analog to digital converter is used to receive simulated light electric current or simulated light voltage, and simulated light electric current or simulated light voltage are converted to digital light electric current or digital light voltage; Backlight control unit is used to receive digital light electric current or the digital light voltage that analog to digital converter is exported, and according to the direction of digital light electric current or digital light change in voltage, adjusts the size to the back facet current of back light unit output in the same way.
In embodiments of the present invention, surround lighting perception circuit changes according to the power of extraneous light, simulated light electric current or simulated light voltage that output changes, backlight control unit is according to the digital light electric current of simulated light electric current or simulated light voltage correspondence or the change direction of digital light voltage, adjust the size of the back facet current of output in the same way, thereby the power of the light backlight that the control back light unit sends, the final display brightness of LCDs of realizing changes along with the variation of extraneous light power, when for example external environment condition light is strong, automatically increase the brightness of LCDs, make that the demonstration of LCDs is more clear, and when externally ambient light is more weak, automatically reduce the brightness of LCDs, reach energy-conservation effect.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the electrical schematic diagram of LCDs first embodiment that provides of the embodiment of the invention;
Fig. 2 is the synoptic diagram of backlight control unit among the LCDs embodiment of the present invention;
Fig. 3 is the electrical schematic diagram of LCDs second embodiment that provides of the embodiment of the invention;
Fig. 4 (a) is the structural representation of the LCDs that provides of the embodiment of the invention, and Fig. 4 (b) is the partial enlarged drawing of chip for driving in the LCDs that provides of the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of LCDs and terminal.The technical scheme of embodiment describes in detail embodiment provided by the invention below in conjunction with accompanying drawing for a better understanding of the present invention.
Referring to Fig. 1, Fig. 1 is the electrical schematic diagram of LCDs first embodiment that provides of the embodiment of the invention.In embodiments of the present invention, LCDs mainly comprises: LCDs face glass 110, chip for driving 120, back light unit 130, be integrated in surround lighting perception circuit 140 on the chip for driving 120, be integrated in analog to digital converter 150 and backlight control unit 160 on the chip for driving 120.
Wherein, chip for driving 120 is used for the viewdata signal of the main control chip output of receiving terminal, to LCDs face glass 110 output row, column drive signals;
Surround lighting perception circuit 140 is used to receive external environment condition light, and according to external ambient light alignment analog to digital converter 150 output simulated light electric current or simulated light voltages;
Analog to digital converter 150 is used to receive simulated light electric current or simulated light voltage, and simulated light electric current or simulated light voltage are converted to digital light electric current or digital light voltage;
In embodiments of the present invention, surround lighting perception circuit 140 changes according to the power of extraneous light, simulated light electric current or simulated light voltage that output changes, backlight control unit 160 is according to the digital light electric current of simulated light electric current or simulated light voltage correspondence or the change direction of digital light voltage, adjust the size of the back facet current of output in the same way, thereby the power of the light backlight that control back light unit 130 sends, the final display brightness of LCDs of realizing changes along with the variation of extraneous light power, when for example external environment condition light is strong, automatically increase the brightness of LCDs, make that the demonstration of LCDs is more clear, and when externally ambient light is more weak, automatically reduce the brightness of LCDs, reach energy-conservation effect.
In embodiments of the present invention, surround lighting perception circuit 140 and analog to digital converter 150 can be integrated on the chip for driving 120, chip for driving 120 can perception external environment condition light power, thereby the output size is with strong and weak photocurrent or the photovoltage that changes of external environment condition light, can save terminal device, for example mobile phone, player etc. make things convenient for the design of terminal device to the arrangement space of the relatively harsh terminal device of profile structural requirement, can be so that terminal device is done more frivolously, more power saving.
Referring to Fig. 2, Fig. 2 is the synoptic diagram of backlight control unit among the LCDs embodiment of the present invention.
In embodiments of the present invention, backlight control unit 160 specifically comprises:
First control module 161 is used for increasing the size to the back facet current of back light unit 130 outputs when digital light electric current or the increase of digital light voltage; And second control module 162, be used for when digital light electric current or digital light voltage reduce, reducing size to the back facet current of back light unit 130 outputs.The size variation of the back facet current of backlight control unit 160 outputs and the size variation of digital light electric current or digital light voltage keep synchronously.
It is to be noted, the function of backlight control unit 160 in embodiments of the present invention can also be finished by the main control chip of terminal, this moment, backlight control unit 160 can be integrated on the main control chip, main control chip output back facet current, the power of the light backlight that control back light unit 130 sends.
In embodiments of the present invention, surround lighting perception circuit 140 can be made of surround lighting perceptron and load elements, and wherein the surround lighting perceptron is used to receive external environment condition light, and output is the simulated light electric current of size variation with the extraneous light power; Load elements is used to receive the simulated light electric current, output and simulated light electric current corresponding simulating photovoltage.Wherein, the surround lighting perceptron can be light activated element.
Referring to Fig. 3, Fig. 3 is the electrical schematic diagram of LCDs second embodiment that provides of the embodiment of the invention.In embodiments of the present invention, LCDs mainly comprises: LCDs face glass 210, chip for driving 220, back light unit 230, be integrated in surround lighting perception circuit 240 on the chip for driving 220, be integrated in analog to digital converter 250 and backlight control unit 260 on the main control chip of terminal.
Wherein, the main control chip of terminal is used for the output image data signal, and main control chip can be integrated with digital to analog converter 250 for microcontroller (MCU, Micro Controller Unit) chip in the main control chip;
Chip for driving 220 is used for the viewdata signal of the main control chip output of receiving terminal, to LCDs face glass 210 output row, column drive signals;
Surround lighting perception circuit 240 is used to receive external environment condition light, and according to external ambient light alignment analog to digital converter 250 output simulated light electric current or simulated light voltages;
Analog to digital converter 250 is used to receive simulated light electric current or simulated light voltage, and simulated light electric current or simulated light voltage are converted to digital light electric current or digital light voltage;
In embodiments of the present invention, surround lighting perception circuit 240 changes according to the power of extraneous light, simulated light electric current or simulated light voltage that output changes, backlight control unit 260 is according to the digital light electric current of simulated light electric current or simulated light voltage correspondence or the change direction of digital light voltage, adjust the size of the back facet current of output in the same way, thereby the power of the light backlight that control back light unit 230 sends, the final display brightness of LCDs of realizing changes along with the variation of extraneous light power, when for example external environment condition light is strong, automatically increase the brightness of LCDs, make that the demonstration of LCDs is more clear, and when externally ambient light is more weak, automatically reduce the brightness of LCDs, reach energy-conservation effect.
In embodiments of the present invention, surround lighting perception circuit 240 is integrated on the chip for driving 220, chip for driving 220 can perception external environment condition light power, thereby the output size is with strong and weak photocurrent or the photovoltage that changes of external environment condition light, can save terminal device, for example mobile phone, player etc. make things convenient for the design of terminal device to the arrangement space of the relatively harsh terminal device of profile structural requirement, can be so that terminal device is done more frivolously, more power saving.
In embodiments of the present invention, backlight control unit specifically comprises:
First control module is used for increasing the size to the back facet current of back light unit 230 outputs when digital light electric current or the increase of digital light voltage; And second control module, be used for when digital light electric current or digital light voltage reduce, reducing size to the back facet current of back light unit 230 outputs.The size variation of the back facet current of backlight control unit 260 outputs and the size variation of digital light electric current or digital light voltage keep synchronously.
It is to be noted, the function of backlight control unit 260 in embodiments of the present invention can also be finished by the main control chip of terminal, this moment, backlight control unit 260 can be integrated on the main control chip, main control chip output back facet current, the power of the light backlight that control back light unit 230 sends.
In embodiments of the present invention, surround lighting perception circuit 240 can be made of surround lighting perceptron and load elements, and wherein the surround lighting perceptron is used to receive external environment condition light, and output is the simulated light electric current of size variation with the extraneous light power; Load elements is used to receive the simulated light electric current, output and simulated light electric current corresponding simulating photovoltage.Wherein, the surround lighting perceptron can be light activated element.
Referring to Fig. 4, Fig. 4 (a) is the structural representation of the LCDs that provides of the embodiment of the invention, and Fig. 4 (b) is the partial enlarged drawing of chip for driving in the LCDs that provides of the embodiment of the invention.
Embodiment of the invention LCDs mainly comprises LCD face glass 310, backlight control unit 320, back light unit 330 and chip for driving 340.Wherein, the main control chip output image data signal of chip for driving 340 receiving terminals.Be integrated with surround lighting perception circuit 341 and analog to digital converter 342 in the chip for driving 340, chip for driving 340 is to the digital light electric current or the digital light voltage of backlight control unit 320 output size variation, and chip for driving 340 is also to LCD face glass 310 output row, column drive signals.
In another embodiment provided by the invention, analog to digital converter 342 is integrated in the main control chip of terminal, be integrated with surround lighting perception circuit 341 in the chip for driving 340 this moment, chip for driving 340 is to the simulated light electric current or the simulated light voltage of main control chip output size variation, and chip for driving 340 is also to LCD face glass 310 output row, column drive signals.Analog to digital converter 342 in the main control chip converts simulated light electric current or simulated light voltage to digital light electric current or digital light voltage, backlight control unit 320 is according to the size variation direction of digital light electric current or digital light voltage, adjust size in the same way to the back facet current of back light unit 330 outputs, thereby make the power of the light backlight that back light unit 330 sends change, the display brightness of final LCDs changes automatically.
In addition, the embodiment of the invention also provides a kind of terminal of using above-mentioned LCDs, and this terminal comprises LCDs, and this LCDs comprises:
The LCDs face glass; Chip for driving is used to receive viewdata signal, to LCDs face glass output row, column drive signal; Back light unit is used to receive back facet current, launches light backlight to the LCDs face glass; Analog to digital converter and the surround lighting perception circuit that is integrated on the chip for driving; This surround lighting perception circuit is used to receive external environment condition light, and according to external ambient light alignment analog to digital converter output simulated light electric current or simulated light voltage;
Analog to digital converter is used to receive simulated light electric current or simulated light voltage, and simulated light electric current or simulated light voltage are converted to digital light electric current or digital light voltage;
Backlight control unit is used to receive digital light electric current or the digital light voltage that analog to digital converter is exported, and according to the direction of digital light electric current or digital light change in voltage, adjusts the size to the back facet current of back light unit output in the same way.
In the terminal that the embodiment of the invention provides, the display brightness of the LCDs of terminal can change along with the variation of extraneous light power, when for example external environment condition light is strong, automatically increase the brightness of LCDs, make that the demonstration of LCDs is more clear, and when externally ambient light is more weak, reduce the brightness of LCDs automatically, reach the effect of saving terminal electric quality.
In embodiments of the present invention, surround lighting perception circuit is integrated on the chip for driving, analog to digital converter can be integrated on the chip for driving, also can be integrated on the main control chip, thereby save the arrangement space of terminal device, make things convenient for the design of terminal device, can be so that more frivolous, more power saving that terminal device is done.
In embodiments of the present invention, backlight control unit specifically can comprise in the LCDs of terminal:
First control module is used for increasing the size to the back facet current of back light unit output when digital light electric current or the increase of digital light voltage; And second control module, be used for when digital light electric current or digital light voltage reduce, reducing size to the back facet current of back light unit output.The size variation of the back facet current of backlight control unit output and the size variation of digital light electric current or digital light voltage keep synchronously.
It is to be noted, the function of backlight control unit in embodiments of the present invention can be finished by the main control chip of terminal, this moment, backlight control unit can be integrated on the main control chip of terminal, main control chip output back facet current, the power of the light backlight that the control back light unit sends.
In embodiments of the present invention, surround lighting perception circuit can be made of surround lighting perceptron and load elements, and wherein the surround lighting perceptron is used to receive external environment condition light, and output is the simulated light electric current of size variation with external environment condition light power; Load elements is used to receive the simulated light electric current, output and simulated light electric current corresponding simulating photovoltage.Wherein, the surround lighting perceptron can be light activated element.
More than LCDs, terminal that the embodiment of the invention is provided be described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, the part that all can change in specific embodiments and applications, this description should not be construed as limitation of the present invention.
Claims (8)
1. LCDs comprises:
The LCDs face glass;
Chip for driving is used to receive viewdata signal, to LCDs face glass output row, column drive signal;
Back light unit is used to receive back facet current, launches light backlight to the LCDs face glass;
It is characterized in that, also comprise:
Analog to digital converter and the surround lighting perception circuit that is integrated on the described chip for driving;
Described surround lighting perception circuit is used to receive external environment condition light, and according to described analog to digital converter output simulated light electric current of external ambient light alignment or simulated light voltage;
Described analog to digital converter is used to receive described simulated light electric current or simulated light voltage, and described simulated light electric current or simulated light voltage are converted to digital light electric current or digital light voltage;
Backlight control unit is used to receive digital light electric current or the digital light voltage that described analog to digital converter is exported, and according to the direction of described digital light electric current or digital light change in voltage, adjusts the size to the back facet current of described back light unit output in the same way.
2. LCDs according to claim 1 is characterized in that,
Described analog to digital converter is integrated on the described chip for driving or on the main control chip of terminal.
3. LCDs according to claim 1 is characterized in that, described backlight control unit comprises:
First control module is used for increasing the size to the back facet current of described back light unit output when described digital light electric current or the increase of digital light voltage;
Second control module is used for when described digital light electric current or digital light voltage reduce, and reduces the size to the back facet current of described back light unit output.
4. according to each described LCDs of claim 1 to 3, it is characterized in that described surround lighting perception circuit comprises:
The surround lighting perceptron is used to receive external environment condition light, and output is the simulated light electric current of size variation with external environment condition light power;
Load elements is used to receive described simulated light electric current, output and described simulated light electric current corresponding simulating photovoltage.
5. terminal comprises:
LCDs, described LCDs comprises:
The LCDs face glass;
Chip for driving is used to receive viewdata signal, to described LCDs face glass output row, column drive signal;
Back light unit is used to receive back facet current, launches light backlight to described LCDs face glass;
It is characterized in that described LCDs also comprises:
Analog to digital converter and the surround lighting perception circuit that is integrated on the described chip for driving;
Described surround lighting perception circuit is used to receive external environment condition light, and according to described analog to digital converter output simulated light electric current of external ambient light alignment or simulated light voltage;
Described analog to digital converter is used to receive described simulated light electric current or simulated light voltage, and described simulated light electric current or simulated light voltage are converted to digital light electric current or digital light voltage;
Backlight control unit is used to receive digital light electric current or the digital light voltage that described analog to digital converter is exported, and according to the direction of described digital light electric current or digital light change in voltage, adjusts the size to the back facet current of described back light unit output in the same way.
6. terminal according to claim 5 is characterized in that,
Described analog to digital converter is integrated on the described chip for driving or on the main control chip of terminal.
7. terminal according to claim 5 is characterized in that, described backlight control unit comprises:
First control module is used for increasing the size to the back facet current of described back light unit output when described digital light electric current or the increase of digital light voltage;
Second control module is used for when described digital light electric current or digital light voltage reduce, and reduces the size to the back facet current of described back light unit output.
8. according to each described terminal of claim 5 to 7, it is characterized in that described surround lighting perception circuit comprises:
The surround lighting perceptron is used to receive external environment condition light, and output is the simulated light electric current of size variation with external environment condition light power;
Load elements is used to receive described simulated light electric current, output and described simulated light electric current corresponding simulating photovoltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910177991A CN101699555A (en) | 2009-10-23 | 2009-10-23 | Liquid crystal display and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910177991A CN101699555A (en) | 2009-10-23 | 2009-10-23 | Liquid crystal display and terminal |
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| CN101699555A true CN101699555A (en) | 2010-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910177991A Pending CN101699555A (en) | 2009-10-23 | 2009-10-23 | Liquid crystal display and terminal |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814285A (en) * | 2010-05-04 | 2010-08-25 | 广东中显科技有限公司 | Flat panel display system capable of automatically adjusting brightness |
| US9811243B2 (en) | 2012-11-20 | 2017-11-07 | Zte Corporation | Network terminal and display method therefor |
| CN107767835A (en) * | 2017-11-22 | 2018-03-06 | 广东欧珀移动通信有限公司 | Display screen component and electronic equipment |
| CN112068235A (en) * | 2020-09-09 | 2020-12-11 | Oppo广东移动通信有限公司 | Preparation method, metal wire grating polaroid, display device and electronic equipment |
-
2009
- 2009-10-23 CN CN200910177991A patent/CN101699555A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814285A (en) * | 2010-05-04 | 2010-08-25 | 广东中显科技有限公司 | Flat panel display system capable of automatically adjusting brightness |
| US9811243B2 (en) | 2012-11-20 | 2017-11-07 | Zte Corporation | Network terminal and display method therefor |
| CN107767835A (en) * | 2017-11-22 | 2018-03-06 | 广东欧珀移动通信有限公司 | Display screen component and electronic equipment |
| CN107767835B (en) * | 2017-11-22 | 2020-04-10 | Oppo广东移动通信有限公司 | Display screen assembly and electronic equipment |
| CN112068235A (en) * | 2020-09-09 | 2020-12-11 | Oppo广东移动通信有限公司 | Preparation method, metal wire grating polaroid, display device and electronic equipment |
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Application publication date: 20100428 |