CN202580942U - Backlight device for widescreen display - Google Patents
Backlight device for widescreen display Download PDFInfo
- Publication number
- CN202580942U CN202580942U CN 201220144443 CN201220144443U CN202580942U CN 202580942 U CN202580942 U CN 202580942U CN 201220144443 CN201220144443 CN 201220144443 CN 201220144443 U CN201220144443 U CN 201220144443U CN 202580942 U CN202580942 U CN 202580942U
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- backlight
- led
- screen
- switch
- backlight lamp
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Abstract
The utility model provides a backlight device for a widescreen display. The backlight device comprises a left backlight screen, a middle standard screen and a right backlight screen which are connected in sequence, wherein the a light-emitting diode (LED) left backlight lamp, an LED middle backlight lamp and an LED right backlight lamp are respectively arranged on the left backlight screen, the middle standard screen and the right backlight screen; the LED left backlight lamp and the LED right backlight lamp are arranged in parallel and are controlled by a first switch to be electrified; the LED middle backlight lamp is controlled by a second switch to be electrified; and the first switch and the second switch are respectively controlled by a wide standard screen signal receiving identification device of the display. When the wide standard screen signal receiving identification device of the display transmits a wide screen signal, the first switch and the second switch are switched on, and the LED left backlight lamp, the LED middle backlight lamp and the LED right backlight lamp are totally turned on; and when the wide standard screen signal receiving identification device of the display transmits a standard screen signal, the first switch is disconnected, the LED left backlight lamp and the LED right backlight lamp are simultaneously turned off, the second switch is switched on, and the LED middle backlight lamp is turned on.
Description
Technical field
The utility model relates to a kind of back lighting device of LCD display.
Background technology
In today that electronic product makes rapid progress, huge reform has also taken place in Screen Technology, the two major types display screens of widescreen with the mark screen in new used equipment, occurred.They are having than big difference aspect aspect ratio example, but screen by the mark screen when reform takes place in widescreen, the demonstration of TV picture signal also complete unity be widescreen.All also be almost mark screen signal such as all TV programme of China, this is for using widescreen to watch mark screen picture to cause tremendous influence.Shield handoff functionality though television set has wide mark, can not reach absolute mark screen fully and show sensation, the blank screen that mainly is both sides partly is not real complete deceiving.Because traditional LED-backlit screen is as a whole; So the display of widescreen switches to the demonstration of mark screen such as the LCD TV after; The outer both sides black screen plate of screen area that mark screen signal shows is still keeping backlight, therefore causes the uncomfortable sensation of screen light leak to the beholder.
The utility model content
The technical problem that the utility model will solve is: a kind of back lighting device of widescreen display is provided, can when selecting the mark screen, cuts off the power supply by the backlight of both sides black screen plate, avoid causing the sense of discomfort of screen light leak.
The utility model is to solve the problems of the technologies described above the technical scheme of being taked to be: a kind of back lighting device of widescreen display; It is characterized in that: it comprises the left backlight screen that connects in order, middle standard laid down by the ministries or commissions of the Central Government screen and right backlight screen, and backlight and the right backlight of LED among LED left side backlight, the LED are set respectively on left backlight screen, middle standard laid down by the ministries or commissions of the Central Government screen and the right backlight screen; The right backlight parallel connection of LED left side backlight and LED is again by first switch control energising; Backlight is by second switch control energising among the LED; First switch and second switch receive recognition device control by the wide mark screen signal that display carries respectively.
Press such scheme, backlight is connected with power supply with second switch series connection back among the described LED; Connect with first switch after described LED left side backlight and the right backlight parallel connection of LED, be connected with power supply again.
Press such scheme, backlight is connected with power supply with second switch series connection back among the described LED; Connect with first switch after described LED left side backlight and the right backlight parallel connection of LED, be connected with power supply with second switch series connection back again.
Press such scheme, described left backlight screen and right backlight screen equal and opposite in direction.
The operation principle of the utility model is: when the wide mark screen signal that carries when display received recognition device and sends widescreen signal, first switch and second switch were all closed, and backlight and LED right side backlight are bright entirely among LED left side backlight, the LED; When the wide mark screen signal that carries when display received recognition device and sends mark screen signal, first switch broke off, and LED left side backlight goes out with the right backlight of LED simultaneously, the second switch closure, and backlight is bright among the LED.
The beneficial effect of the utility model is: can when selecting the mark screen, cut off the power supply by the backlight of both sides black screen plate, avoid causing the sense of discomfort of screen light leak.
Description of drawings
Fig. 1 is the appearance assumption diagram of the utility model one embodiment.
Fig. 2 is the circuit diagram of the utility model one embodiment.
Fig. 3 is the circuit diagram of the another embodiment of the utility model.
The specific embodiment
Embodiment one:
Fig. 1 is the appearance assumption diagram of the utility model one embodiment, and it comprises the left backlight screen 1 that connects in order, middle standard laid down by the ministries or commissions of the Central Government screen 2 and right backlight screen 3, left backlight screen 1 and right backlight screen 3 equal and opposite in directions.
Fig. 2 is the circuit diagram of the utility model one embodiment, and backlight 5 and the right backlight 6 of LED among LED left side backlight 4, the LED are set respectively on left backlight screen 1, middle standard laid down by the ministries or commissions of the Central Government screen 2 and the right backlight screen 3; LED left side backlight 4 and right backlight 6 parallel connections of LED are again by the 7 control energisings of first switch; Backlight 5 is by second switch 8 control energisings among the LED; First switch 7 receives recognition device control by the wide mark screen signal that display carries respectively with second switch 8.
In the present embodiment, concrete circuit is connected to: backlight 5 is connected with power supply 9 with second switch 8 series connection backs among the LED; Described LED left side backlight 4 is connected with first switch 7 with the right backlight of LED 6 parallel connection backs, is connected with power supply 9 again.
When remote control sends the command signal of opening, the display received television signal, according to unlike signal gained picture dimension, carry out following operation:
Mark screen pattern: after television set is opened, identify the picture signal that receives and be mark screen size.Wide mark screen signal receives recognition device second switch 8 is carried out closed procedure, and first switch 7 is in off-state.Backlight 5 is opened thereby the middle standard laid down by the ministries or commissions of the Central Government is shielded 2 bright among this moment LED.LED left side backlight 4 close with the right backlight 6 of LED thereby left backlight screen 1 unglazed with right backlight screen 3, mark screen pattern work in the standard laid down by the ministries or commissions of the Central Government screen 2 during television set is adjusted to picture.
Widescreen pattern: under the situation that television set is opened; After identifying the picture signal that receives and being widescreen; Wide mark screen signal receives recognition device first switch 7 is carried out closed procedure with second switch 8; Backlight 5 and the right backlight 6 of LED are all bright among this moment LED left side backlight 4, the LED, and TV is adjusted to picture in the whole zone that comprises left backlight screen 1, middle standard laid down by the ministries or commissions of the Central Government screen 2 and right backlight screen 3, the work of widescreen pattern.
Shutdown: when remote control sends the command signal of shutdown; Wide mark screen signal receives the recognition device acknowledge(ment) signal; Break off interlock first switch 7 and second switch 8 corresponding with it, backlight 5 and the right backlight 6 of LED are closed the television set shutdown simultaneously among LED left side backlight 4, the LED.
Embodiment two:
The structure of present embodiment and principle and embodiment one are basic identical, and its difference is: backlight 5 is connected with power supply 9 with second switch 8 series connection backs among the LED; LED left side backlight 4 is connected with first switch 7 with the right backlight of LED 6 parallel connection backs, is connected with power supply 9 with second switch 8 series connection backs again.
Claims (4)
1. the back lighting device of a widescreen display; It is characterized in that: it comprises the left backlight screen that connects in order, middle standard laid down by the ministries or commissions of the Central Government screen and right backlight screen, and backlight and the right backlight of LED among LED left side backlight, the LED are set respectively on left backlight screen, middle standard laid down by the ministries or commissions of the Central Government screen and the right backlight screen; The right backlight parallel connection of LED left side backlight and LED is again by first switch control energising; Backlight is by second switch control energising among the LED; First switch and second switch receive recognition device control by the wide mark screen signal that display carries respectively.
2. the back lighting device of widescreen display according to claim 1 is characterized in that: backlight is connected with power supply with second switch series connection back among the described LED; Connect with first switch after described LED left side backlight and the right backlight parallel connection of LED, be connected with power supply again.
3. the back lighting device of widescreen display according to claim 1 is characterized in that: backlight is connected with power supply with second switch series connection back among the described LED; Connect with first switch after described LED left side backlight and the right backlight parallel connection of LED, be connected with power supply with second switch series connection back again.
4. according to the back lighting device of claim 1 or 2 or 3 described widescreen displays, it is characterized in that: described left backlight screen and right backlight screen equal and opposite in direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220144443 CN202580942U (en) | 2012-04-09 | 2012-04-09 | Backlight device for widescreen display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220144443 CN202580942U (en) | 2012-04-09 | 2012-04-09 | Backlight device for widescreen display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202580942U true CN202580942U (en) | 2012-12-05 |
Family
ID=47250349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220144443 Expired - Fee Related CN202580942U (en) | 2012-04-09 | 2012-04-09 | Backlight device for widescreen display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202580942U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019137438A1 (en) * | 2018-01-15 | 2019-07-18 | 西安中兴新软件有限责任公司 | Terminal display adjustment circuit, device and method, and terminal |
| CN111263488A (en) * | 2020-04-01 | 2020-06-09 | 深圳市冲天光电科技有限公司 | LED energy-saving circuit |
-
2012
- 2012-04-09 CN CN 201220144443 patent/CN202580942U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019137438A1 (en) * | 2018-01-15 | 2019-07-18 | 西安中兴新软件有限责任公司 | Terminal display adjustment circuit, device and method, and terminal |
| CN110047441A (en) * | 2018-01-15 | 2019-07-23 | 西安中兴新软件有限责任公司 | A kind of terminal vision-control circuit, device, method and terminal |
| CN110047441B (en) * | 2018-01-15 | 2022-11-04 | 西安中兴新软件有限责任公司 | Terminal display adjusting circuit, device and method and terminal |
| CN111263488A (en) * | 2020-04-01 | 2020-06-09 | 深圳市冲天光电科技有限公司 | LED energy-saving circuit |
| CN111263488B (en) * | 2020-04-01 | 2021-03-16 | 深圳市冲天光电科技有限公司 | LED energy-saving circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20130409 |