CN203941678U - A kind of backlight of LCD brightness intelligent regulating device - Google Patents
A kind of backlight of LCD brightness intelligent regulating device Download PDFInfo
- Publication number
- CN203941678U CN203941678U CN201420153797.4U CN201420153797U CN203941678U CN 203941678 U CN203941678 U CN 203941678U CN 201420153797 U CN201420153797 U CN 201420153797U CN 203941678 U CN203941678 U CN 203941678U
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- led
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- backlight
- regulating device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Liquid Crystal Display Device Control (AREA)
Abstract
The utility model discloses a kind of backlight of LCD brightness intelligent regulating device, comprise the adjustable pulse oscillation circuit of DC/DC inverter drive circuit and dutycycle; The utility model is in the time of work, respond to the power of external environment condition light by phototriode, the PWM ripple that while making, base chip is exported different dutycycles is controlled the output current of booster converter, thereby makes the brightness of a LED, the 2nd LED, the 3rd LED and the 4th LED change and change according to the power of ambient light; The utility model changes according to the power of ambient light, has dynamically controlled the backlight illumination of liquid crystal display, watches the most comfortable brightness to reach human eye, has reduced to a great extent the injury to people's eyes.
Description
Technical field
The utility model relates to a kind of brightness intelligent regulating device, is specifically related to a kind of backlight of LCD brightness intelligent regulating device.
Background technology
The feature such as that liquid crystal display has is frivolous, power saving, color are good, therefore liquid crystal display is applied in various electronic equipments, and for display, its function allows people is directly perceived, clear, comfortable sends various graph text informations into human eye exactly.Liquid crystal display luminous is to rely on the LED luminotron that embeds display to provide light source for thinking display, but can not automatically regulate for varying environment brightness, like this screen intensity discomfort that easily causes eyes to watch of failing to change in environmental change.
Summary of the invention
For addressing the above problem, the utility model proposes and a kind ofly can, according to the backlight illumination of the automatic brightness adjustment liquid crystal display LED of extraneous light, watch the backlight of LCD brightness intelligent regulating device of the most comfortable brightness to reach human eye.
Backlight of LCD brightness intelligent regulating device of the present utility model, comprises the adjustable pulse oscillation circuit of DC/DC inverter drive circuit and dutycycle; Described DC/DC inverter drive circuit comprises positive source (VCC), power cathode (GND), booster converter (U1) and field effect transistor (Q1); Described booster converter (U1) is connected with field effect transistor (Q1); Described positive source (VCC) is connected with field effect transistor (Q1) by inductance (L1); Described inductance (L1) is also connected with power cathode (GND) by the first electric capacity (C2); Described field effect transistor (Q1) is connected with the first diode (D1); Described booster converter (U1) is connected to power cathode (GND) and the first diode (D1) by the first resistance (R2) and the second electric capacity (C1) respectively; Described the first diode (D1) is also connected with power cathode (GND) with the 3rd electric capacity (C3) by the second resistance (R1); The contact series connection of described the second resistance (R1) and the 3rd electric capacity (C3) is just meeting a LED(D3), the 2nd LED(D5), the 3rd LED(D4) and the 4th LED(D2) to the contact of the first resistance (R2) and the second electric capacity (C1); The contact of described the first resistance (R2) and the second electric capacity (C1) is also connected with booster converter (U1); Described dutycycle is adjustable base chip (U2) when pulse oscillation circuit comprises; When described, base chip (U2) is connected with the second diode (D6), the 3rd diode (D8), the 4th electric capacity (C4) and the 5th electric capacity (C5); Described the 3rd diode (D8) is connected with the second diode (D6) with phototriode (D7) by the 4th resistance (R4); Described phototriode (D7) is also connected with the 3rd resistance (R3); When described, base chip (U2) is also connected with booster converter (U1).
Further, described booster converter (U1) is XC9013 type booster converter.
Further, described field effect transistor (Q1) is IRF510 type field effect transistor.
Further, the inductance value of described inductance (L1) is 10uH.
Further, described the first diode (D1), the second diode (D6), the 3rd diode (D8) are IN4007 type diode.
Further, a described LED(D3), the 2nd LED(D5), the 3rd LED(D4) and the 4th LED(D2) be white light type LED.
Further, when described, base chip (U2) is 555 o'clock base chips.
Further, described phototriode (D7) is 3du33 type phototriode.
The utility model compared with prior art, it has following beneficial effect: of the present utility modelly a kind ofly can, according to the backlight illumination of the automatic brightness adjustment liquid crystal display LED of extraneous light, watch the backlight of LCD brightness intelligent regulating device of the most comfortable brightness to reach human eye; The utility model is in the time of work, respond to the power of external environment condition light by phototriode, the PWM ripple that while making, base chip is exported different dutycycles is controlled the output current of booster converter, thereby makes the brightness of a LED, the 2nd LED, the 3rd LED and the 4th LED change and change according to the power of ambient light; The utility model changes according to the power of ambient light, has dynamically controlled the backlight illumination of liquid crystal display, watches the most comfortable brightness to reach human eye, has reduced to a great extent the injury to people's eyes.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of DC/DC inverter drive circuit of the present utility model;
Fig. 2 is the circuit theory diagrams of the adjustable pulse oscillation circuit of dutycycle of the present utility model.
In figure: VCC, positive source; GND, power cathode, U1, booster converter; Q1, field effect transistor; L1, inductance; C2, the first electric capacity; D1, the first diode; R2, the first resistance; C1, the second electric capacity; R1, the second resistance; C3, the 3rd electric capacity; D3, a LED; D5, the 2nd LED; D4, the 3rd LED; D2, the 4th LED; U2, time base chip; D6, the second diode; D8, the 3rd diode; C4, the 4th electric capacity; C5, the 5th electric capacity; R4, the 4th resistance; D7, phototriode; R3, the 3rd resistance.
Embodiment
A kind of backlight of LCD brightness intelligent regulating device as depicted in figs. 1 and 2, comprises the adjustable pulse oscillation circuit of DC/DC inverter drive circuit and dutycycle; Described DC/DC inverter drive circuit comprises positive source (VCC), power cathode (GND), booster converter (U1) and field effect transistor (Q1); Described booster converter (U1) is connected with field effect transistor (Q1); Described positive source (VCC) is connected with field effect transistor (Q1) by inductance (L1); Described inductance (L1) is also connected with power cathode (GND) by the first electric capacity (C2); Described field effect transistor (Q1) is connected with the first diode (D1); Described booster converter (U1) is connected to power cathode (GND) and the first diode (D1) by the first resistance (R2) and the second electric capacity (C1) respectively; Described the first diode (D1) is also connected with power cathode (GND) with the 3rd electric capacity (C3) by the second resistance (R1); The contact series connection of described the second resistance (R1) and the 3rd electric capacity (C3) is just meeting a LED(D3), the 2nd LED(D5), the 3rd LED(D4) and the 4th LED(D2) to the contact of the first resistance (R2) and the second electric capacity (C1); The contact of described the first resistance (R2) and the second electric capacity (C1) is also connected with booster converter (U1); Described dutycycle is adjustable base chip (U2) when pulse oscillation circuit comprises; When described, base chip (U2) is connected with the second diode (D6), the 3rd diode (D8), the 4th electric capacity (C4) and the 5th electric capacity (C5); Described the 3rd diode (D8) is connected with the second diode (D6) with phototriode (D7) by the 4th resistance (R4); Described phototriode (D7) is also connected with the 3rd resistance (R3); When described, base chip (U2) is also connected with booster converter (U1).
Wherein, described booster converter (U1) is XC9013 type booster converter; Described field effect transistor (Q1) is IRF510 type field effect transistor; The inductance value of described inductance (L1) is 10uH; Described the first diode (D1), the second diode (D6), the 3rd diode (D8) are IN4007 type diode; A described LED(D3), the 2nd LED(D5), the 3rd LED(D4) and the 4th LED(D2) be white light type LED; When described, base chip (U2) is 555 o'clock base chips; Described phototriode (D7) is 3du33 type phototriode.
Of the present utility modelly a kind ofly can, according to the backlight illumination of the automatic brightness adjustment liquid crystal display LED of extraneous light, watch the backlight of LCD brightness intelligent regulating device of the most comfortable brightness to reach human eye; The utility model is in the time of work, respond to the power of external environment condition light by phototriode, the PWM ripple that while making, base chip is exported different dutycycles is controlled the output current of booster converter, thereby makes the brightness of a LED, the 2nd LED, the 3rd LED and the 4th LED change and change according to the power of ambient light; The utility model changes according to the power of ambient light, has dynamically controlled the backlight illumination of liquid crystal display, watches the most comfortable brightness to reach human eye, has reduced to a great extent the injury to people's eyes.
Embodiment recited above is described preferred implementation of the present utility model, not design of the present utility model and scope is limited.Do not departing under the prerequisite of the utility model design concept; various modification and improvement that this area ordinary person makes the technical solution of the utility model; all should drop into protection domain of the present utility model; the technology contents of the utility model request protection, has all been documented in claims.
Claims (8)
1. a backlight of LCD brightness intelligent regulating device, is characterized in that: comprise the adjustable pulse oscillation circuit of DC/DC inverter drive circuit and dutycycle; Described DC/DC inverter drive circuit comprises positive source (VCC), power cathode (GND), booster converter (U1) and field effect transistor (Q1); Described booster converter (U1) is connected with field effect transistor (Q1); Described positive source (VCC) is connected with field effect transistor (Q1) by inductance (L1); Described inductance (L1) is also connected with power cathode (GND) by the first electric capacity (C2); Described field effect transistor (Q1) is connected with the first diode (D1); Described booster converter (U1) is connected to power cathode (GND) and the first diode (D1) by the first resistance (R2) and the second electric capacity (C1) respectively; Described the first diode (D1) is also connected with power cathode (GND) with the 3rd electric capacity (C3) by the second resistance (R1); The contact series connection of described the second resistance (R1) and the 3rd electric capacity (C3) is just meeting a LED(D3), the 2nd LED(D5), the 3rd LED(D4) and the 4th LED(D2) to the contact of the first resistance (R2) and the second electric capacity (C1); The contact of described the first resistance (R2) and the second electric capacity (C1) is also connected with booster converter (U1); Described dutycycle is adjustable base chip (U2) when pulse oscillation circuit comprises; When described, base chip (U2) is connected with the second diode (D6), the 3rd diode (D8), the 4th electric capacity (C4) and the 5th electric capacity (C5); Described the 3rd diode (D8) is connected with the second diode (D6) with phototriode (D7) by the 4th resistance (R4); Described phototriode (D7) is also connected with the 3rd resistance (R3); When described, base chip (U2) is also connected with booster converter (U1).
2. backlight of LCD brightness intelligent regulating device according to claim 1, is characterized in that: described booster converter (U1) is XC9013 type booster converter.
3. backlight of LCD brightness intelligent regulating device according to claim 1, is characterized in that: described field effect transistor (Q1) is IRF510 type field effect transistor.
4. backlight of LCD brightness intelligent regulating device according to claim 1, is characterized in that: the inductance value of described inductance (L1) is 10uH.
5. backlight of LCD brightness intelligent regulating device according to claim 1, is characterized in that: described the first diode (D1), the second diode (D6), the 3rd diode (D8) are IN4007 type diode.
6. backlight of LCD brightness intelligent regulating device according to claim 1, is characterized in that: a described LED(D3), the 2nd LED(D5), the 3rd LED(D4) and the 4th LED(D2) be white light type LED.
7. backlight of LCD brightness intelligent regulating device according to claim 1, is characterized in that: when described, base chip (U2) is 555 o'clock base chips.
8. backlight of LCD brightness intelligent regulating device according to claim 1, is characterized in that: described phototriode (D7) is 3du33 type phototriode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420153797.4U CN203941678U (en) | 2014-04-01 | 2014-04-01 | A kind of backlight of LCD brightness intelligent regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420153797.4U CN203941678U (en) | 2014-04-01 | 2014-04-01 | A kind of backlight of LCD brightness intelligent regulating device |
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| Publication Number | Publication Date |
|---|---|
| CN203941678U true CN203941678U (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420153797.4U Expired - Fee Related CN203941678U (en) | 2014-04-01 | 2014-04-01 | A kind of backlight of LCD brightness intelligent regulating device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105636280A (en) * | 2016-03-31 | 2016-06-01 | 深圳多哚新技术有限责任公司 | Backlight circuit of VR display |
| CN105927212A (en) * | 2016-06-16 | 2016-09-07 | 中国石油集团渤海钻探工程有限公司 | Light ray sensing driller display system |
| CN106504725A (en) * | 2015-09-07 | 2017-03-15 | 江苏清投视讯科技有限公司 | A kind of rear-projection brightness control unit based on automatic detection |
| CN107424579A (en) * | 2017-08-16 | 2017-12-01 | 昆山龙腾光电有限公司 | A kind of embedded photoinduction drive system and its driving method |
| CN109394262A (en) * | 2018-09-19 | 2019-03-01 | 深圳市威尔德医疗电子有限公司 | A kind of color ultrasound keypad and ultrasonic system |
-
2014
- 2014-04-01 CN CN201420153797.4U patent/CN203941678U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504725A (en) * | 2015-09-07 | 2017-03-15 | 江苏清投视讯科技有限公司 | A kind of rear-projection brightness control unit based on automatic detection |
| CN105636280A (en) * | 2016-03-31 | 2016-06-01 | 深圳多哚新技术有限责任公司 | Backlight circuit of VR display |
| CN105927212A (en) * | 2016-06-16 | 2016-09-07 | 中国石油集团渤海钻探工程有限公司 | Light ray sensing driller display system |
| CN107424579A (en) * | 2017-08-16 | 2017-12-01 | 昆山龙腾光电有限公司 | A kind of embedded photoinduction drive system and its driving method |
| CN107424579B (en) * | 2017-08-16 | 2020-06-05 | 昆山龙腾光电股份有限公司 | Embedded light induction driving system and driving method thereof |
| CN109394262A (en) * | 2018-09-19 | 2019-03-01 | 深圳市威尔德医疗电子有限公司 | A kind of color ultrasound keypad and ultrasonic system |
| CN109394262B (en) * | 2018-09-19 | 2021-08-13 | 深圳市威尔德医疗电子有限公司 | Color ultrasonic key board and ultrasonic system |
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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: 20141112 Termination date: 20170401 |