CN1776504A - Liquid crystal display backlight source structure capable of simply changing light source - Google Patents
Liquid crystal display backlight source structure capable of simply changing light source Download PDFInfo
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- CN1776504A CN1776504A CN 200510124528 CN200510124528A CN1776504A CN 1776504 A CN1776504 A CN 1776504A CN 200510124528 CN200510124528 CN 200510124528 CN 200510124528 A CN200510124528 A CN 200510124528A CN 1776504 A CN1776504 A CN 1776504A
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Abstract
Structure of backlight source includes euphotic layer, light source box, and more than one set of lamp holder. The being composed of diffuser plate, prismatic lens and plate for guiding light, the euphotic layer is installed outside low glass base plate fixedly. Removable light source box with size corresponding to size of the plate for guiding light is setup at backside of the plate for guiding light. More than one set of lamp holder connected to power source is setup inside the light source box. Through the said lamp holder, hot-cathode fluorescent lamps, energy saving lamps or other light sources can be installed inside light source box. When failure of light source occurs, sealing strip is pulled apart, and light source box is dismounted. Then, new hot-cathode fluorescent lamps, energy saving lamps or other light sources can be installed simply. The invention solves issue of difficulty to replace light source of liquid crystal display, and lowers maintenance cost.
Description
Technical field
The present invention relates to a kind of backlight of LCD, particularly a kind of backlight of LCD structure that can simple and easy replacing light source.
Background technology
Along with the arriving of information age, LCD (LCD) has obtained using widely, has been deep into each department of national economy now.As one of most important technology of flat-panel monitor, LCD can have so huge development, and is inseparable with the series of advantages that it is had.Compare with the CRT that people know, the outstanding advantage of LCD has: low-work voltage, low-power consumption, frivolous and panelized, display mode flexibly, flicker free and X-radiation, the matrix addressing helps digital technology application etc.LCD not only is used widely on counter, mobile phone, and in automobile instrument panel, measurement display, office automation equipment, field of television very big development has been arranged also.Because LCD is passive light emitting-type flat-panel monitor, in the dark easily opinion property is lower, therefore needs backlight to improve many important performances such as brightness, contrast, uniformity of luminance of display frame in LCD.
Light source in the LCD back light source system all has characteristics such as brightness height, life-span length.Electroluminescent device (EL), light emitting diode (LED) mainly are monochromatic light (green, redness) light sources mainly as the light source of 4 inches following small size LCD, and the LCD backlight product of white light (full color) EL is also arranged recently.Along with the LCD module constantly develops to brighter, lighter, thinner direction, side-light type cold-cathode fluorescence lamp (CCFL) is the main flow of full color, high brightness, large-scale LCD product backlight, at big-and-middle-sized size thin film transistor (TFT) (TFT-LCD), for example the application in the products such as LCD TV, LCD computer display, laptop computer display, portable DVD player is very extensive.Succeeded in developing a kind of plane fluorescent light that adopts hollow cold cathode and high-voltage pulse to drive in the recent period, its uniformity of luminance is suitable for large LCD considerably beyond tubular structure very much.Through years of researches exploitations, though CCFL backlight technical matters comparative maturity, and stable performance, it also has a lot of shortcomings.For example in large scale liquid crystal TV and LCD, the driving circuit cost height of CCFL back light source system has increased cost to a certain extent.And the CCFL backlight is one of the easiest part that breaks down in large scale liquid crystal TV and the LCD, fractures easily, changes difficulty, and maintenance cost often reaches thousands of units.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art, a kind of backlight of LCD structure that can change simply the light source that breaks down is provided, this back light source structure has characteristics such as simple to operate, practical.
For achieving the above object, the technical solution used in the present invention is: comprise the photic zone of being made up of diffuser plate, prismatic lens and light guide plate that is fixedly mounted on the lower glass substrate outside, be characterized in, rear side in light guide plate also is provided with and the corresponding removable light source box of light guide plate size, be provided with one group of above lamp socket that is connected with power supply in the said light source box, hot-cathode fluorescent lamp, electricity-saving lamp or other light source are installed in the light source box by lamp socket.
Another characteristics of the present invention are: the bottom of light source box inboard and be provided with the aluminium film reflecting plate of reflex all around.
During the LCD operate as normal, light source box closely contacts with the remainder of LCD bottom, and the contact position seals by sealing joint strip all around.When backlight breaks down, sealing joint strip is torn and light source box is pulled down, the hot-cathode fluorescent lamp that more renews simply, electricity-saving lamp or other light source, thereby solved the problem that LCD cost height, power consumption are big, be difficult to change backlight, had simple to operate, safe and reliable, practical advantage.
Backlight of LCD structure provided by the present invention is not only applicable to the large scale liquid crystal display, and suitable equally to LCD TV.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present invention;
Fig. 2 is the structural representation of light-passing board 11 of the present invention;
Fig. 3 is the structural representation of light source box 7 of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Referring to Fig. 1,2,3, LCD comprises, lower glass substrate 1,2 and be arranged on, lower glass substrate 1, liquid crystal layer 3 between 2, be installed with by diffuser plate 4 in the outside of lower glass substrate 2, the photic zone 11 that prismatic lens 5 and light guide plate 6 are formed, rear side in light guide plate 6 also is provided with and the corresponding removable light source box 7 of light guide plate 6 sizes, be provided with one group of above lamp socket 8 that is connected with power supply in the light source box 7, hot-cathode fluorescent lamp, electricity-saving lamp or other light source 9 are installed in the light source box 7 by lamp socket 8, the bottom of light source box 7 and be provided with the aluminium film reflecting plate 10 of reflex all around.
Cathode fluorescent lamp, electricity-saving lamp or other light source 9, lamp socket 8 and reflecting plate 10 in light source box 7 of the present invention and the light source box 7 are dismountable, and photic zone 11 is fixed.During the LCD operate as normal, light source box 7 closely contacts with the photic zone 11 of LCD bottom, and the contact position seals by sealing joint strip all around.When hot-cathode fluorescent lamp, electricity-saving lamp or other light source 9 break down, sealing joint strip is torn and light source box is pulled down from the bottom of liquid crystal cell, change hot-cathode fluorescent lamp, electricity-saving lamp or other light source 9, can solve the problem that light source breaks down simply.
Claims (2)
1, backlight of LCD structure that can simple and easy replacing light source, comprise the photic zone of forming by diffuser plate [4], prismatic lens [5] and light guide plate [6] [11] that is fixedly mounted on lower glass substrate [2] outside, it is characterized in that: the rear side in light guide plate [6] also is provided with and light guide plate [6] size corresponding removable light source box [7], be provided with one group of above lamp socket [8] that is connected with power supply in the said light source box [7], hot-cathode fluorescent lamp, electricity-saving lamp or other light source [9] are installed in the light source box [7] by lamp socket [8].
2, backlight of LCD structure that can simple and easy replacing light source according to claim 1 is characterized in that: the bottom that said light source box [7] is inboard and be provided with the aluminium film reflecting plate [10] of reflex all around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510124528 CN1776504A (en) | 2005-12-12 | 2005-12-12 | Liquid crystal display backlight source structure capable of simply changing light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510124528 CN1776504A (en) | 2005-12-12 | 2005-12-12 | Liquid crystal display backlight source structure capable of simply changing light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1776504A true CN1776504A (en) | 2006-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510124528 Pending CN1776504A (en) | 2005-12-12 | 2005-12-12 | Liquid crystal display backlight source structure capable of simply changing light source |
Country Status (1)
| Country | Link |
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| CN (1) | CN1776504A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7896673B2 (en) | 2006-06-27 | 2011-03-01 | Samsung Electronics Co., Ltd. | Lamp socket, backlight assembly including the lamp socket, and liquid crystal display including the backlight assembly |
-
2005
- 2005-12-12 CN CN 200510124528 patent/CN1776504A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7896673B2 (en) | 2006-06-27 | 2011-03-01 | Samsung Electronics Co., Ltd. | Lamp socket, backlight assembly including the lamp socket, and liquid crystal display including the backlight assembly |
| US8414320B2 (en) | 2006-06-27 | 2013-04-09 | Samsung Display Co., Ltd. | Lamp socket, backlight assembly including the lamp socket, and liquid crystal display including the backlight assembly |
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