CN202258267U - Liquid crystal all-in-one machine having automatic backlight adjusting function - Google Patents
Liquid crystal all-in-one machine having automatic backlight adjusting function Download PDFInfo
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- CN202258267U CN202258267U CN2011203755147U CN201120375514U CN202258267U CN 202258267 U CN202258267 U CN 202258267U CN 2011203755147 U CN2011203755147 U CN 2011203755147U CN 201120375514 U CN201120375514 U CN 201120375514U CN 202258267 U CN202258267 U CN 202258267U
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- display screen
- touch display
- backlight
- liquid crystal
- control chip
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Abstract
The utility model discloses a liquid crystal all-in-one machine which comprises a touch display screen, an internal PC, a master control chip and a backlight control circuit. The internal PC is connected with the touch display screen and the master control chip, respectively. The backlight control circuit is connected with the master control chip. Touch induction signals received by the touch display screen are transmitted to the PC. If writing operation on the touch display screen is determined by the PC based on the touch induction signals, control instructions are output by the PC to the master control chip which is controlled to trigger the backlight control circuit, and then brightness adjustment of backlight of the touch display screen is carried out by the backlight control circuit. Through the technical scheme, when the touch induction signals are received by the touch display screen, the backlight brightness of the touch display screen is adjusted automatically.
Description
Technical field
The present invention relates to the multimedia equipment field, more particularly, relate to a kind of liquid crystal integral machine.
Background technology
The profile that liquid crystal integral machine is flat makes it can be applied in each environment, can work as blackboard, notice board use.When the LCDs of liquid crystal integral machine is touch display screen, can on touch-screen, directly write, directly perceived and convenient.
In the prior art, the screen intensity of liquid crystal integral machine is generally a fixed value, and the user is when writing, and screen intensity still maintains the brightness when showing.And the input operation of liquid crystal integral machine need be accomplished on its touch display screen, and this certainly will require the operator nearer apart from touch-screen.It is more that this situation usually occurs in teaching environment, especially teacher's situation of giving lessons to the student through liquid crystal integral machine.When being a teacher back to liquid crystal integral machine, the backlight of touch display screen high brightness can make present student clearly watch the input content on the touch display screen; Turn round when the enterprising running hand of touch display screen is write and be a teacher, the touch display screen of this liquid crystal integral machine still maintains the show state of high brightness, and strong is backlight extremely dazzling for the operator who closely writes.
In addition, the high brightness of touch display screen is bigger to people's eye injury, and human eye carries out input operation facing to the touch display screen of high brightness for a long time and causes kopiopia easily, even major injury more.Writing process under the high brightness is write easily in addition the bigger place of user's influence and is made mistakes; Especially stretch one's arm when writing the user; Because bias light brightness Du Taigao, the zone of covering display text, figure easily makes the user be difficult for seeing clearly institute's content written.
The utility model content
In view of this, the utility model provides a kind of liquid crystal integral machine, can when touch display screen receives the touch sensible signal, regulate the backlight illumination of touch display screen automatically.
The utility model embodiment is achieved in that
A kind of liquid crystal integral machine comprises: touch display screen, inner PC, main control chip and backlight control circuit; Wherein, said inner PC connects said touch display screen and main control chip respectively, and said backlight control circuit connects said main control chip; Said touch display screen transfers to said PC with the touch sensible signal that receives; When said PC is confirmed on the said touch display screen written operations to take place according to said touch sensible signal; Export steering order by said PC to said main control chip; Control said main control chip and trigger said backlight control circuit, by backlight the carry out brightness regulation of said backlight control circuit said touch display screen.
Preferably, to trigger the mode of said backlight control circuit be the pulse width modulation (PWM) mode to said main control chip.
Preferably, said touch display screen connects said PC through the USB line.
Preferably, said PWM mode be said main control chip extinguish through PWM or light said touch display screen backlight in the part light source.
Preferably, said light source is a LED.
Compare with prior art, the technical scheme that the utility model provides has the following advantages and characteristics:
Among the utility model embodiment; For the touch display screen of liquid crystal integral machine is provided with backlight control circuit, when touch display screen receives the touch sensible signal, can trigger the backlight illumination that backlight control circuit is regulated touch display screen automatically; Thereby; As user during at the enterprising running hand write operation of touch display screen, can under the situation that does not receive strong backlight illumination, accomplish like a cork and write, promoted the operability of liquid crystal integral machine greatly; Simultaneously, through reducing the backlight illumination of touch display screen, can reduce the energy consumption of liquid crystal integral machine to a certain extent.
Description of drawings
Fig. 1 is the structural representation of a kind of liquid crystal integral machine of providing of the utility model;
Fig. 2 is a physical circuit synoptic diagram of realizing touch display screen adjusting backlight in a kind of liquid crystal integral machine of providing of the utility model.
Embodiment
A lot of details have been set forth in the following description so that make much of the utility model; But the utility model can also adopt other to be different from alternate manner described here and implement; Those skilled in the art can do similar popularization under the situation of the utility model intension, so the utility model does not receive the restriction of following disclosed specific embodiment.
Secondly, the utility model combines synoptic diagram to be described in detail, when the utility model embodiment is detailed; For ease of explanation; The sectional view of expression device architecture can be disobeyed general ratio and done local the amplification, and said synoptic diagram is example, and it should not limit the scope of the utility model protection at this.The three dimensions size that in actual fabrication, should comprise in addition, length, width and the degree of depth.
The utility model provides a kind of liquid crystal integral machine, and is as shown in Figure 1, specifically can comprise: touch display screen 101, inner PC 102, main control chip 103 and backlight control circuit 104; Wherein, said inner PC 102 connects said touch display screen 101 and main control chip 103 respectively, and said backlight control circuit 104 connects said main control chip 103; Said touch display screen 101 transfers to said PC 102 with the touch sensible signal that receives; When said PC102 machine is confirmed on the said touch display screen 101 written operations to take place according to said touch sensible signal; Export steering orders by said PC 102 to said main control chip 103; Control said main control chip 103 and trigger said backlight control circuit 104, by the brightness regulation of carrying out backlight of 104 pairs of said touch display screens 101 of said backlight control circuit.
Among this embodiment, main control chip is arranged on the inner control chip of liquid crystal integral machine, and it receives the steering order of PC, and control triggers backlight control circuit.
When using the utility model technical scheme; For the touch display screen of liquid crystal integral machine is provided with backlight control circuit, when touch display screen receives the touch sensible signal, can trigger the backlight illumination that backlight control circuit is regulated touch display screen automatically; Thereby; As user during at the enterprising running hand write operation of touch display screen, can under the situation that does not receive strong backlight illumination, accomplish like a cork and write, promoted the operability of liquid crystal integral machine greatly; Simultaneously, through reducing the backlight illumination of touch display screen, can reduce the energy consumption of liquid crystal integral machine to a certain extent.
For above-mentioned purpose, the feature and advantage that make the utility model can be more obviously understandable, will combine accompanying drawing below, the technical scheme among the utility model embodiment is carried out clear, intactly description.
During practical implementation; Said touch display screen connects said PC through the USB line; The mode that main control chip triggers said backlight control circuit can be PWM (Pulse Width Modulation; Pulse-length modulation) mode specifically can be: said main control chip extinguish through PWM or light said touch display screen backlight in the part light source.Usually, the back light of touch display screen can be LED (Light Emitting Diode, light emitting diode).
With reference to figure 2, show a kind of physical circuit synoptic diagram of realizing the adjusting backlight of above-mentioned touch display screen in the liquid crystal integral machine.Wherein, touch display screen connects PC through the USB line, and PC connects main control chip through the RS232 serial ports, and main control chip then connects a PWM backlight control circuit.When definite touch display screen receives the touch sensible signal, that is: sensed the user when the enterprising running hand write operation of touch display screen, liquid crystal integral machine just gets into adjustment process backlight.In this process, touch display screen at first receives the touch sensible signal, and this touch sensible signal is transferred to PC through the USB line, judges the current written operations that whether on touch display screen, takes place by PC according to the induction situation.
In case write beginning, PC then exports steering order through the RS232 serial ports to main control chip, and the control main control chip triggers the PWM backlight control circuit of its connection, and the backlight illumination through PWM comes control flow makes brightness be reduced to human eye and closely watches comfortable degree.In PWM backlight control circuit shown in Figure 2, main control chip is exported a modulating pulse, and this moment, capacitor C 8 began to discharge and recharge.When the C8 charging finished, the base stage of NPN pipe Q1 was a high level, Q1 conducting this moment, and LED negative electrode level is dragged down, and at this moment, LED is luminous; Correspondingly, when the C8 discharge finished, the base stage of NPN pipe Q1 was a low level, and this moment, Q1 was closed, and LED negative electrode level is drawn high, and at this moment, LED extinguishes.In the embodiment of the invention,, realize the control backlight to touch display screen through the extinguishing or light of control LED.
About the degree of LED brightness regulation, the utility model is not done concrete qualification, and those skilled in the art can specifically be provided with according to the practical application scene.
Thus; For the touch display screen of liquid crystal integral machine is provided with backlight control circuit, when touch display screen receives the touch sensible signal, can trigger the backlight illumination that backlight control circuit is regulated touch display screen automatically; Thereby; As user during at the enterprising running hand write operation of touch display screen, can under the situation that does not receive strong backlight illumination, accomplish like a cork and write, promoted the operability of liquid crystal integral machine greatly; Simultaneously, through reducing the backlight illumination of touch display screen, can reduce the energy consumption of liquid crystal integral machine to a certain extent.
The above only is the preferred embodiment of the utility model, is not the utility model is done any pro forma restriction.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (5)
1. a liquid crystal integral machine is characterized in that, comprising: touch display screen, inner PC, main control chip and backlight control circuit; Wherein, said inner PC connects said touch display screen and main control chip respectively, and said backlight control circuit connects said main control chip; Said touch display screen transfers to said PC with the touch sensible signal that receives; When said PC is confirmed on the said touch display screen written operations to take place according to said touch sensible signal; Export steering order by said PC to said main control chip; Control said main control chip and trigger said backlight control circuit, by backlight the carry out brightness regulation of said backlight control circuit said touch display screen.
2. liquid crystal integral machine according to claim 1 is characterized in that, the mode that said main control chip triggers said backlight control circuit is the pulse width modulation (PWM) mode.
3. liquid crystal integral machine according to claim 1 is characterized in that said touch display screen connects said PC through the USB line.
4. liquid crystal integral machine according to claim 2 is characterized in that, said PWM mode be said main control chip extinguish through PWM or light said touch display screen backlight in the part light source.
5. liquid crystal integral machine according to claim 4 is characterized in that, said light source is a LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203755147U CN202258267U (en) | 2011-09-30 | 2011-09-30 | Liquid crystal all-in-one machine having automatic backlight adjusting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203755147U CN202258267U (en) | 2011-09-30 | 2011-09-30 | Liquid crystal all-in-one machine having automatic backlight adjusting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202258267U true CN202258267U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203755147U Expired - Fee Related CN202258267U (en) | 2011-09-30 | 2011-09-30 | Liquid crystal all-in-one machine having automatic backlight adjusting function |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399661A (en) * | 2013-06-18 | 2013-11-20 | 深圳市创凯电子有限公司 | Method and device for adjusting luminance of touch display screen |
| CN103632649A (en) * | 2012-08-21 | 2014-03-12 | 宏碁股份有限公司 | A method for adjusting backlight brightness and an electronic apparatus |
| CN105023552A (en) * | 2014-04-21 | 2015-11-04 | 纬创资通股份有限公司 | Display and brightness adjusting method thereof |
| CN106792057A (en) * | 2016-12-29 | 2017-05-31 | 厦门厦华科技有限公司 | A kind of interactive TV system and brightness control method of protection operator's eyesight |
| TWI599997B (en) * | 2016-03-23 | 2017-09-21 | 奇景光電股份有限公司 | Driver integrated circuit applying image processing driving method and touch display system |
| CN110362254A (en) * | 2019-07-17 | 2019-10-22 | 深圳市智微智能科技开发有限公司 | A kind of touch brightness regulating circuit and method |
| CN110956939A (en) * | 2019-11-27 | 2020-04-03 | 华为技术有限公司 | Method for adjusting screen brightness and electronic equipment |
-
2011
- 2011-09-30 CN CN2011203755147U patent/CN202258267U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632649A (en) * | 2012-08-21 | 2014-03-12 | 宏碁股份有限公司 | A method for adjusting backlight brightness and an electronic apparatus |
| CN103632649B (en) * | 2012-08-21 | 2016-03-23 | 宏碁股份有限公司 | The method of adjustment of backlight illumination and electronic installation |
| CN103399661A (en) * | 2013-06-18 | 2013-11-20 | 深圳市创凯电子有限公司 | Method and device for adjusting luminance of touch display screen |
| CN105023552A (en) * | 2014-04-21 | 2015-11-04 | 纬创资通股份有限公司 | Display and brightness adjusting method thereof |
| TWI599997B (en) * | 2016-03-23 | 2017-09-21 | 奇景光電股份有限公司 | Driver integrated circuit applying image processing driving method and touch display system |
| US10775920B2 (en) | 2016-03-23 | 2020-09-15 | Himax Technologies Limited | Driver integrated circuit applying image processing driving method and touch display system |
| CN106792057A (en) * | 2016-12-29 | 2017-05-31 | 厦门厦华科技有限公司 | A kind of interactive TV system and brightness control method of protection operator's eyesight |
| CN106792057B (en) * | 2016-12-29 | 2023-02-28 | 厦门厦华科技有限公司 | Interactive television system for protecting vision of operator and brightness control method |
| CN110362254A (en) * | 2019-07-17 | 2019-10-22 | 深圳市智微智能科技开发有限公司 | A kind of touch brightness regulating circuit and method |
| CN110362254B (en) * | 2019-07-17 | 2022-07-01 | 深圳市智微智能科技股份有限公司 | Touch type brightness adjusting circuit and method |
| CN110956939A (en) * | 2019-11-27 | 2020-04-03 | 华为技术有限公司 | Method for adjusting screen brightness and electronic equipment |
| CN110956939B (en) * | 2019-11-27 | 2022-12-13 | 华为技术有限公司 | Method for adjusting screen brightness and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20180930 |