CN1437100A

CN1437100A - Display

Info

Publication number: CN1437100A
Application number: CN 02100480
Authority: CN
Inventors: 范国书; 丁景隆
Original assignee: Chi Mei Optoelectronics Corp
Current assignee: Chi Mei Optoelectronics Corp
Priority date: 2002-02-05
Filing date: 2002-02-05
Publication date: 2003-08-20
Anticipated expiration: 2022-02-05
Also published as: CN1179267C

Abstract

The liquid crystal display includes a main frame to protect and fix the inside parts; one display panel installed onto the frame for displaying image; one lamp tube combination behind the display panel to produce light beam; one reflecting plate with one flat plate and two side boards behind the lamp tube combination to reflecting light beam; one support frame set on the reflecting plate to support the display panel and separated by certain interval to the side boards; and circuit board to control the operation of the liquid crystal display. The circuit board has integrated control circuit boards and is set inside the interval. In addition, the flat plate of the reflecting plate serves also as the frame connected to the chassis supporting the display.

Description

Display

Technical field

The invention provides a kind of display, particularly a kind of with the LCD of reflecting plate as belfry.

Background technology

Along with scientific-technical progress, common individual and the company of being used for of computer is for general individual, because multimedia technology reaches its maturity, present image effect true to nature via the computer powerful operation capacity again, display has become in the computer system an important peripheral hardware.General now display commonly used is cathode ray tube (CRT) display and LCD (LCD).Cathode-ray tube display uses electron beam to come phospher to produce shades of colour, and therefore need expend bigger power offers cathode-ray tube (CRT), with the generation electron beam, and needs bigger volume hold cathode-ray tube (CRT).If the screen display size is bigger, then for the user, more need to use bigger space to hold cathode-ray tube display, often cause the inconvenience on the ornaments, and cathode-ray tube display can produce electromagnetic radiation thereby the user is produced healthy effects when show image.Therefore, LCD is accepted by the user and replaces cathode-ray tube display to become main flow commodity on the market gradually because LCD not only volume is little, and power consumption is lower, in addition, the LCD electromagnetic radiation of health that also can not exert an influence.

See also Fig. 1, Fig. 1 is the element synoptic diagram of known direct type (direct type) LCD 10.LCD 10 comprises: upper frame 12 and underframe 24 are used for fixing the inner member of LCD 10; Liquid crystal panel 14 is used for the show image picture; Diffuser plate (diffuser) 18 is used for making light even; Light tube group 20 is used for producing white light; Reflecting plate 22 is used for reflecting the light that light tube group 20 is produced; And underframe 25, be used for supporting LCD 10.Shine on diffuser plate 18 or when via reflecting plate 22 light tube group 20 emitted lights being reflexed to diffuser plate 18, diffuser plate 18 can make equalizing light rays, so that white light is radiated on the liquid crystal panel 14 equably when light tube group 20 emits beam.

See also Fig. 2 and Fig. 1, Fig. 2 is the backplan of reflecting plate 22 shown in Figure 1.Reflecting plate 22 back sides are provided with X-axis control panel (X-board) 30 and Y-axis control panel (Y-board) 32, are connected with liquid crystal panel respectively; Analog/digital converter (A/D board) 34, being used for analog signal conversion is digital signal; Control panel 35 is connected with X-axis control panel 30 and Y-axis control control panel 32; And connector 36, be connected with analog/digital converter 34.Wherein, connector 36 can receive the signal that device for image (for example display card) is imported, and this signal can be converted to digital signal via analog/digital converter 34 and import in the control panel 35, control panel 35 produces corresponding signal and exports X-axis control panel 30 and Y-axis control panel 32 respectively to then, produces corresponding control signal again via X-axis control panel 30 and Y-axis control panel 32 and gives liquid crystal panel 14 and the image output picture.

Generally speaking, directly the type LCD is used for the LCD of big display size, because light tube group 20 itself can produce large-scale light emitting source, and light source directly is located at the display below, therefore need not thick and heavy light guide plate and alleviate integral display weight, but owing to use the cause of light tube group 20, must have enough spaces to come diffused light source, so directly the type LCD itself is difficult for making slimming.In addition, prior art is installed on control element between reflecting plate 22 and the underframe 24, thereby more increases the thickness of LCD and cause the inconvenience of use going up and installing.

Summary of the invention

Therefore fundamental purpose of the present invention provides a kind of LCD that reduces device thickness, to address the above problem.

The invention provides a kind of display, it comprises: main frame; Display panel is installed in this main frame, with show image; Light tube group is arranged at this display panel rear, to produce light; Reflecting plate is fixed in the rear of this light tube group, the light that is produced by this light tube group with reflection; And carriage, be arranged on this reflecting plate, be used for supporting this display panel.This reflecting plate comprises flat board and two side plates, each side plate and this flat board bevel.This display also comprises circuit board, is attached at least one side plate, to control the operation of this display.

Description of drawings

Fig. 1 is the element synoptic diagram of known direct type LCD.

Fig. 2 is the backplan of reflecting plate shown in Figure 1.

Fig. 3 is the synoptic diagram of the direct type LCD of the present invention.

Fig. 4 is the element synoptic diagram of the direct type LCD of Fig. 3.

Fig. 5 is a LCD shown in Figure 3 cut-open view along profile line 5-5.

Embodiment

See also Fig. 3 to Fig. 5, Fig. 3 is the synoptic diagram of the direct type LCD 40 of the present invention, and Fig. 4 is the element synoptic diagram of LCD 40, and Fig. 5 is LCD 40 a shown in Figure 3 cut-open view along profile line 5-5.Directly type LCD 40 comprises: main frame 42 is used for protecting and the fixing internal element; Display panel 44 is installed in the main frame 42; Light tube group 48 is arranged at display panel 44 rears, to produce white light; Diffuser plate 46 is arranged between display panel 44 and the light tube group 48, to spread the light that light tube group 48 is produced equably; Reflecting plate 50 is fixed in light tube group 48 rears; Carriage 51 is arranged on the reflecting plate 50, is used for supporting display panel 44 and diffuser plate 46; Circuit board 52 is used for controlling display panel 44; Connector 54 is used for receiving the signal that device for image is imported; And underframe 56, be used for supporting LCD 40.Reflecting plate 50 comprises dull and stereotyped 57 and two

side plates

58,59, each

side plate

58,59 and dull and stereotyped 57 bevels, and carriage 51 comprises four

frame

53a, 53b, 53c, 53d, also bevel between frame 53a, the 53b and dull and stereotyped 57 wherein, be used for reflecting the light that light tube group 48 is produced, and

frame

53c, 53d are used for making the structure of carriage 51 more firm, to reach effect fixing and support.In addition, form space 66 at a distance of a predetermined space between frame 53a and the side plate 58.So, present embodiment uses carriage 51 to support LCD 40, make LCD 40 firmer and can resist the influence of external force to LCD 40 structures, and the flat board 57 common reflectings surface that form of frame 53a, the 53b of

carriage

51,53c, 53d and reflecting plate 50 are used for reflecting the light that light tube group 48 is produced.At least comprise X-axis control panel 60 in the circuit board 52, be used for driving the data of vertical direction; Control panel 62 is used for controlling X-axis control panel 60; And analog/digital converter 64, being used for analog signal conversion is digital signal.Circuit board 52 can be rigid circuit board or soft printed circuit board.

In the present embodiment, on the circuit board 52 of direct type LCD 40 and the side plate 58 that connector 54 is installed on reflecting plate 50, and the present invention utilizes space 66 that connector 54 and circuit board 52 are set on side plate 58.When the user carries LCD 40 and makes LCD 40 be subjected to external force when collision, the situation of side plates 58 takes place to break away from for fear of the circuit board 52 of side plate 58 and connector 54, LCD 40 of the present invention utilizes frame 53a to fix element on the side plate 58, via the spacing of adjusting between frame 53a and the side plate 58, both clamp the circuit component embedding on the side plate 58 and reach fixing effect to make frame 52a and side plate 58.In order to alleviate the weight of LCD 40, carriage 51 can use the material of plastics and so on to constitute.In addition, can use the multilayer board mode with all kinds of control panels, for example X-axis control panel, analog/digital converter etc., be integrated on the circuit board 52 via printed circuit-board assembly, therefore the present invention can be under the shared area of side plate 58 mounting circuit boards 52, in addition, comprise the electromagnetic protection layer in addition around the circuit board 52, be used for the electromagnetic radiation that screened circuit plate 52 produced.In addition, an end of underframe 56 is fixed in reflecting plate 50 rear sides with supporting reflex plate 50, that is underframe 56 utilizes reflecting plate 50 directly to support whole LCD 40 as the belfry of LCD 40.

In the present embodiment, an end of underframe 56 also can be fixed in the bottom side of main frame 42, sees through main frame 42 and supports whole LCD 40.In addition, also can utilize frame 53b to come to form another space with side plate 59, shown in frame 53a and side plate 58, circuit board 52 can partly be attached on the side plate 58 of reflecting plate 50, and other parts are attached to the space that makes full use of on the side plate 59 between

biside plate

58,59 and the carriage 51, or only be attached on the side plate 59 of reflecting plate, all can reach the purpose of the thickness that reduces LCD 40.

Compare with known direct type LCD, prior art is provided with a plurality of control panels with the control signal of video signal between reflecting plate and external frame, yet, the present invention utilizes the space between side plate and the carriage, under existing side plate area, utilize the technology of known multilayer board and printed circuit-board assembly (PCBA) that various control panels are integrated and are arranged on the side plate inner plane of reflecting plate, therefore can dwindle the required thickness of direct type LCD, reduce to settle the required space of direct type LCD simultaneously, thereby increase the convenience on using.Moreover, prior art must be installed the electromagnetic protection layer to avoid electromagnetic interference (EMI) around each control panel, yet the present invention only needs the circuit board on side plate the electromagnetic protection layer to be set on every side to get final product, the scope of the electromagnetic protection layer of the present invention electromagnetic protection layer scope required than prior art is little, so the present invention can reduce the required material of electromagnetic protection layer, further reduces production costs.In addition; because prior art is arranged at the reflecting plate rear with control panel; therefore need framework to be arranged at the control panel rear to protect this control panel element; yet; the present invention integrates each control panel becomes a circuit board; and utilize the space between reflecting plate and the carriage and circuit board is installed on the side plate inner plane of reflecting plate, so the present invention only utilizes the side plate of reflecting plate can protect this circuit board.Moreover; the present invention utilize reflecting plate dull and stereotyped itself as belfry to replace the underframe of existing LCD; be connected with the flat board of reflecting plate via underframe and support whole display; therefore the present invention does not need extra framework can reach the function of holding circuit plate and support displays; make the required material of framework in the prior art so can reduce in a large number, further reduce production costs.

The above is preferred embodiment of the present invention only, the claim scope is made according to the present invention equivalent variations and modification, all within the scope of the invention.

Claims

1. display, it comprises:

Main frame;

Display panel is installed in the described main frame, with show image;

Light tube group is arranged at described display panel rear, to produce light;

Reflecting plate is fixed in the rear of described light tube group, and with the light that reflection is produced by described light tube group, described reflecting plate comprises flat board and at least one side plate, and described side plate becomes an oblique angle with flat board;

Carriage is arranged on the described reflecting plate, is used for supporting described display panel, described carriage comprises four frames, wherein the dull and stereotyped bevel of at least one frame and described reflecting plate is used for reflecting the light that described light tube group produces, and with described side plate at a distance of predetermined space; And

Circuit board is arranged in the described predetermined space, is used for controlling the operation of described display.

2. display as claimed in claim 1 is characterized in that, described display panel is a display panels.

3. display as claimed in claim 1 is characterized in that, also comprises underframe, and the one end is fixed in the rear side of described reflecting plate, to support described reflecting plate.

4. display as claimed in claim 1 is characterized in that, also comprises underframe, and the one end is fixed in the bottom side of described main frame, to support described main frame.

5. display as claimed in claim 1 is characterized in that, also comprises diffuser plate, is located between described display panel and the described light tube group light that is produced to spread described light tube group equably.

6. display as claimed in claim 1 is characterized in that, described circuit board is rigid circuit board.

7. display as claimed in claim 6 is characterized in that, described circuit board is a printed circuit board (PCB).

8. display as claimed in claim 1 is characterized in that, also comprises the electromagnetic protection layer, is fixed in around the circuit board on the side plate of described reflecting plate, to shield the electromagnetic radiation that described circuit board is produced.

9. display as claimed in claim 1 is characterized in that, described circuit board comprises: the X-axis control panel is used for transmitting the data of vertical direction; Control panel is used for controlling described X-axis control panel; And analog/digital converter, being used for analog signal conversion is digital signal.

10. display as claimed in claim 1 is characterized in that, described reflecting plate comprises two side plates, and described circuit board is attached on the side plate in the biside plate of described reflecting plate.

11. display as claimed in claim 1 is characterized in that, two side plates of described reflecting plate are positioned at the upper/lower terminal of described flat board.

12. display as claimed in claim 1 is characterized in that, described circuit board is attached on the side plate of described dull and stereotyped lower end.