KR100822052B1 - Lcd module combined led display and back-light unit - Google Patents

Abstract

An LCD(Liquid Crystal Display) combined an LED(Light Emitting Diode) display member with a back light unit is provided to install the LED on a main PCB(Printed Circuit Board) of the back light unit and to emit the LED through a touch screen. A mold frame(340) receives and fixes a lamp assembly, a reflection plate, an LGP(Light Guide Panel), and optical sheet sequentially. Plural penetration holes are formed at a side and the other side of the mold frame. An LCD panel(370) is installed at the upper portion of the optical sheets and displays an image. A bottom case(310) is installed at the lower portion of the mold frame. A top case(380) is assembled with the bottom case and fixes the mold frame and the LCD panel. Plural functional buttons are quipped on the outer circumference of the LCD panel. An LED array is installed between the top case and the LCD panel and has plural LEDs for irradiating light through the functional buttons of the top case. A touch screen is installed at the upper portion of the mold frame and the LCD panel and has functional buttons at the positions corresponding to the installation positions of LEDs.

Description

LCD module combining LED display unit and backlight unit {LCD MODULE COMBINED LED DISPLAY AND BACK-LIGHT UNIT}

1 is a partial cross-sectional view schematically showing an LCD module according to the prior art

2 is a partial cross-sectional view schematically showing another LCD module according to the prior art.

3 is a cross-sectional view illustrating an LCD module in which an LED display unit and a backlight unit are coupled according to a first embodiment of the present invention.

4 is a cross-sectional view illustrating an LCD module in which an LED display unit and a backlight unit are coupled according to a second exemplary embodiment of the present invention.

5 is an exploded perspective view illustrating an LCD module in which an LED display unit and a backlight unit are coupled according to a third exemplary embodiment of the present invention.

Figure 6 is a photograph showing a comparison of the width of the conventional products according to the present invention

<Explanation of symbols for the main parts of the drawings>

110: main PCB 120: LCD panel

130: touch screen 140: main body case

150: LED display unit 160: LCD module frame

170: LED display hole 210: main PCB

220: LCD module 230: touch screen

240: body case 250: LED display

260: LCD module frame 300: key print protection film

310: Bottom case

320: main PCB or lamp assembly

330: reflector 340: mold frame

350: light guide plate 360: diffusion sheet

370 LCD panel 380 Top case

400: LED Array FPCB (Flexible Printed Circuit Board)

410: LED Array

The present invention relates to a liquid crystal display (LCD) module in which an LED display unit and a backlight unit (BLU) are combined, and in particular, a personal terminal equipped with an LCD and organic light emitting diodes (OLEDs) is developed. It relates to an LCD module that combines an LED display unit and a backlight unit (BLU) to make a smaller, lighter and thinner personal digital assistant (PDA, PMP, UMPC, PMPC, Web pad, etc.) in manufacturing / production.

In general, the development of the LCD module in the information society has developed remarkably and its role is becoming important. Since LCD modules are light-receiving elements that do not emit light of their own, a backlight assembly for transmitting light is generally required in a transmissive LCD module.

The backlight assembly includes a lamp assembly used as a light source of an LCD module, a light guide plate for guiding light generated from the lamp assembly to the LCD panel, and a sheet for diffusing and condensing the light guided by the light guide plate. And a mold frame for accommodating and fixing the lamp assembly, the light guide plate, the sheets, and the like.

1 is a partial cross-sectional view schematically showing an LCD module according to the prior art.

In the conventional LCD module illustrated in FIG. 1, an LED light source 10 is mounted at one end thereof, and a light guide plate 12 is formed at a side of the LED light source 10, and the upper surface of the light guide plate 12 is disposed. The diffusion sheet 13, the LCD liquid crystal panel 14, and the protective plate 15 are sequentially stacked.

Here, reference numeral 16 denotes an external body, which is a notebook computer using an LCD module, a mobile phone, an MP3 player, a personal digital assistant (PDA), a portable multimedia player (PMP), an ultra mobile PC (UMPC), An external body such as a portable computer (PMPC), a web pad, a digital camera, a digital watch, or the like is included.

LCD module having such a configuration is made of a backlight method, which is a light guide plate 12 in which the light emitted from the light source 10 is directed to the front of the path, and diffuses the light incident through the light guide plate 12 And scattered to increase and equalize the luminance in the front-facing direction of the backlight exiting surface, and to operate according to the principle projected onto the LCD liquid crystal panel 14 through the diffusion sheet 13.

In addition, although the LCD liquid crystal panel 14 is not shown in the drawing, it is composed of a prism plate (condensing plate) and a reflecting plate to prevent the light projected from the diffusion sheet 13 from exiting in a direction other than the front surface of the light exit surface, By improving the directivity, the viewing angle is narrowed to increase the brightness in the front direction of the backlight emitting surface.

Therefore, the LCD module is a user of the LCD liquid crystal panel by the path 2 described above, ie, the light 2 which passes through the light guide plate 12, the diffusion sheet 13, and the LCD panel 14 in the LED light source 10. (14) A moving picture, a text, and the like displayed on the screen are viewed.

2 is a partial cross-sectional view schematically showing another LCD module according to the prior art.

In the conventional LCD module illustrated in FIG. 2, a sub-PCB 11 and a main PCB 10 are respectively provided at upper and lower portions of the LCD module frame 60, and the LCD module is provided at an opening of the sub-PCB 11. 20 is installed, and the touch screen 30 is configured on the LCD module 20. In addition, a main body case 40 is formed at an outer circumference of the touch screen 30, and an LED display unit 50 is provided inside the main body case 40. In this case, although not shown in the figure above the LED display unit 50 is provided with a keypad or a functional button.

The LCD module 20 includes a backlight assembly for transmitting light. In this case, as described above, the backlight assembly includes a lamp assembly used as a light source of the LCD module, a light guide plate for guiding the light generated from the lamp assembly to the LCD panel, and diffuses the light guided from the light guide plate. And a sheet for condensing, and a mold frame for accommodating and fixing the lamp assembly, the light guide plate, the sheet, and the like.

As shown in FIG. 1, the conventional LCD module illustrated in FIG. 2 includes a notebook computer, a mobile phone, an MP3 player, a personal digital assistant (PDA), a portable multimedia player (PMP), an ultra mobile PC (UMPC), a portable computer (PMPC), Web pads, digital cameras, digital clocks, and the like.

However, the conventional LCD module having the above configuration has not been satisfactory in terms of size, cost, and design of the product since the backlight unit (BLU) is installed on the LCD module and the LED board (Board) is manufactured to install buttons.

In addition, in the past, since the LED display unit or the functional button can not be arranged outside the LCD module, the distance between the active area of the screen and the outside of the product is difficult to design a compact (see FIG. 6). In particular, mobile devices used in one hand (for example, PDA, PMP, UMPC, etc.) must satisfy both the propositions that the screen should be large and fit in one hand. Is closely related to the size of the LCD module and the space occupied by the buttons and buttons on the LED display.

Therefore, in order to reduce the size of the product in the conventional LCD module, it is difficult to design because it is necessary to reduce the size of the LCD module or to eliminate the LED display unit or the functional buttons disposed on the outside of the LCD module.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to develop, manufacture, and produce personal terminals equipped with LCDs and OLEDs, which are smaller, lighter, and thinner personal information terminals (PDA, PMP, UMPC, The present invention provides an LCD module in which a LED display unit and a backlight unit (BLU) that can make a PMPC, a web pad, etc.) are combined.

In addition, another object of the present invention is to install the LED on the backlight unit (BLU) main PCB in the LCD module frame so that the LED is emitted to the touch screen (Touch screen) installed on the top, thereby configuring the functional button on the touch screen together It is possible to provide an LCD module in which a LED display unit and a backlight unit (BLU) are combined to reduce product size and improve design.

LCD module combined with the LED display unit and the backlight unit (BLU) according to the present invention for achieving the above object, the lamp assembly, the reflecting plate, the light guide plate, and the optical sheets are sequentially stored and fixed and a plurality of through holes on one side and the other side The formed mold frame; An LCD panel mounted on the optical sheets and displaying an image; A touch screen installed on the mold frame and the LCD panel; And a plurality of LEDs installed on the lamp assembly and emitting light to the touch screen through the through-holes of the mold frame, respectively.

The touch screen may include a functional button at a point corresponding to the position where the LED is installed.

In addition, the functional button is characterized in that installed on the outer periphery of the LCD panel.

The LCD module may further include a key print protection film laminated on the touch screen.

In addition, the LCD module is characterized in that through holes are formed in the body case at a point corresponding to the position where the LED is installed, when the body case is formed on the outer periphery of the touch screen.

In addition, the LCD module may be a notebook computer, a mobile phone, an MP3 player, a personal digital assistant (PDA), a portable multimedia player (PMP), an ultra mobile PC (UMPC), a portable computer (PMPC), a web pad, a digital camera. , Characterized in that it is used in any one of the products, including digital watches.

Another LCD module coupled to the LED display unit and the backlight unit (BLU) according to the present invention for achieving the above object, the lamp assembly, the reflecting plate, the light guide plate, and the optical sheets are sequentially received and fixed, and a plurality of through to one side and the other side A mold frame in which holes are formed; An LCD panel mounted on the optical sheets and displaying an image; A bottom case installed below the mold frame; A top case assembled with the bottom case to fix the mold frame and the LCD panel, and having a plurality of functional buttons on an outer circumference of the LCD panel; And an LED array installed between the top case and the LCD panel, the LED array including a plurality of LEDs that emit light to the functional buttons of the top case.

The LCD module may further include a touch screen installed on the mold frame and the LCD panel and having a functional button at a point corresponding to the position where the LED is installed.

The LCD module may further include an LED array FPCB for wiring connection under the LED array.

In addition, the LCD module is installed on the lamp assembly and a plurality of LEDs for emitting light to the functional button of the top case through the through-hole of the mold frame; characterized in that it comprises a.

The LCD module includes a notebook computer, a mobile phone, an MP3 player, a personal digital assistant (PDA), a portable multimedia player (PMP), an ultra mobile PC (UMPC), a portable computer (PMPC), a web pad, a digital camera, a digital Characterized in that used in any one of the products, including watches.

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Therefore, by installing the LED on the main unit PCB of the backlight unit (BLU) in the LCD module frame, the LED is emitted by the touch screen installed on the top, it is possible to configure the functional buttons on the touch screen to reduce the size of the product Design can be improved.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First embodiment

3 is a cross-sectional view of an LCD module in which an LED display unit and a backlight unit are coupled according to a first embodiment of the present invention.

As shown in FIG. 3, the LCD module in which the LED display unit and the backlight unit are combined according to the first embodiment of the present invention sequentially receives and fixes a lamp assembly, a reflector, a light guide plate, and an optical sheet, and has a plurality of one side and the other side. A mold frame 160 having a through hole, an LCD panel 120 installed on the optical sheets and displaying an image, and a touch screen installed on the mold frame 160 and the LCD panel 120. 130 and a plurality of LED display parts 150 installed on the lamp assembly and emitting light to the touch screen 130 through the through holes of the mold frame 160, respectively. In addition, when the main body case 140 is formed on the outer circumference of the touch screen 130 as shown in FIG. 3, the LCD module has a main body case 140 corresponding to a position where the LED display unit 150 is installed. Each through hole is formed.

The touch screen 130 has a functional button (not shown) at a point corresponding to the position where the LED display unit 150 is installed. In this case, the functional button is preferably installed on the outer periphery of the LCD panel 120.

The LCD module may be configured by forming a key print protection film (not shown) on the touch screen 130.

The LCD module having the above configuration may be used in any one of products including notebook computers, mobile phones, MP3 players, PDAs, PMPs, UMPCs, PMPCs, Web pads, digital cameras, and digital watches.

Second embodiment

4 is a cross-sectional view illustrating an LCD module in which an LED display unit and a backlight unit are coupled according to a second exemplary embodiment of the present invention.

As shown in FIG. 4, the LCD module in which the LED display unit and the backlight unit are combined according to the second embodiment of the present invention sequentially receives and fixes the lamp assembly, the reflector, the light guide plate, and the optical sheets, and has a plurality of one side and the other side. A mold frame 260 having a through hole, an LCD panel 220 installed on the optical sheets and displaying an image, and a touch screen installed on the mold frame 260 and the LCD panel 220. 230, the key print protection film 230 formed on the touch screen 230, and the lamp assembly installed on the lamp assembly and through the through-holes of the mold frame 260, respectively, to the touch screen 230. It comprises a plurality of LED display unit 250 for emitting a.

As before, the touch screen 230 is provided with a functional button (not shown) at a point corresponding to the position where the LED display 250 is installed. In this case, the functional button is preferably installed on the outer periphery of the LCD panel 220.

The LCD module may be used in any one of products including a notebook computer, a mobile phone, an MP3 player, a PDA, a PMP, a UMPC, a PMPC, a web pad, a digital camera, and a digital watch.

Third embodiment

5 is an exploded perspective view illustrating an LCD module in which an LED display unit and a backlight unit are coupled according to a third exemplary embodiment of the present invention.

As shown in FIG. 5, the LCD module in which the LED display unit and the backlight unit are coupled according to the third exemplary embodiment of the present invention includes a lamp assembly (or a main PCB) 320, a reflector 330, a light guide plate 350, and a diffuser. A mold frame 340 which sequentially stores and fixes the optical sheets including the sheet 360 and has a plurality of through holes formed on one side and the other side, an LCD panel 370 installed on the optical sheets and displaying an image; The bottom case 310 is installed below the mold frame 340, and the bottom case 310 is assembled to fix the mold frame 340 and the LCD panel 370, and the LCD panel ( A top case 380 having a plurality of functional buttons (not shown) on an outer circumference of the 370, and installed between the top case 380 and the LCD panel 370, the top case 380. LED er with a plurality of LEDs to emit light with a functional button of 380 It comprises a ray 410, and the LED array FPCB 400 for wiring connection under the LED array 410.

The LCD module further includes a plurality of LEDs (not shown) installed on the lamp assembly 320 and emitting light to the functional buttons of the top case 380 through the through holes of the mold frame 340. do. The LCD module may further include a touch screen (not shown) installed on the mold frame and the LCD panel and having a functional button at a point corresponding to the position where the LED is installed.

Here, the LCD module manufactures and arranges the LED array FPCB 400 separately inside the cable line in consideration of the cable line coming from the LCD panel 370 layer, so that the active area of the screen and the LED Complementary design that the distance between the array 410 is far. That is, the LED array FPCB 400 is disposed in the thickness space between the LCD panel 370 and the LED array 410 and the spacing is very narrow.

The LCD module installs an LED light path coming from the back at the edge of the lamp assembly {backlight unit (BLU)} 320 and fits the LED to the outside of the lamp assembly 320 disposed behind the reflector 330. The LED array FPCB 400 is connected to the lamp assembly 320 in a connector or fixed form, and the input signal value of the touch screen is determined by the key signal for the display unit function and function in the lamp assembly 320. It can be operated in the form of

As described above, the LCD module having the above configuration is to be used in any one of products including notebook computers, mobile phones, MP3 players, PDAs, PMPs, UMPCs, PMPCs, Web pads, digital cameras, and digital watches. Can be.

The LED display unit used in the present invention includes all kinds of LEDs including DIP type LEDs and SMD type LEDs, and particularly, it is preferable to use SMD type LEDs.

The present invention is not limited to the above-described embodiments, and various modifications and changes can be made by those skilled in the art, which should be regarded as included in the spirit and scope of the present invention as defined in the appended claims. will be.

As described above, according to the LCD module in which the LED display unit and the backlight unit (BLU) according to the present invention are combined, a smaller, lighter and thinner personal information terminal in developing / manufacturing / producing a personal terminal equipped with an LCD and an OLED ( PDA, PMP, UMPC, PMPC, Web pad, etc.)

In addition, by installing the LED on the main PCB of the backlight unit (BLU) in the LCD module frame so that the LED is emitted by the touch screen installed on the top, it is possible to configure a functional button on the touch screen together It can reduce the size and improve the design. In particular, since the functional buttons are used together with the touch screen installed on the surface, the functional buttons do not need to be separately installed, thereby contributing to the manufacturing cost and design.

Claims (12)

In the LCD module, A mold frame accommodating and fixing the lamp assembly, the reflector, the light guide plate, and the optical sheets sequentially, and having a plurality of through holes formed at one side and the other side thereof; An LCD panel mounted on the optical sheets and displaying an image; A touch screen installed on the mold frame and the LCD panel; And And a plurality of LEDs installed on the lamp assembly and emitting light to the touch screen through the through holes of the mold frame, respectively. The LED display unit and the backlight unit (BLU) are coupled to each other. The touch screen of claim 1, wherein the touch screen comprises: LCD module coupled to the LED display unit and the backlight unit (BLU), characterized in that the functional button is provided at a point corresponding to the position where the LED is installed. The method of claim 2, wherein the functional button is: LCD module coupled to the LED display unit and the backlight unit (BLU), characterized in that installed on the outer periphery of the LCD panel. The method of claim 1, wherein the LCD module: The LED display unit and the backlight unit (BLU) is coupled to the LCD, characterized in that it further comprises a; key print protection film laminated on the touch screen. The method of claim 1, wherein the LCD module: When the main body case is formed on the outer periphery of the touch screen, the LED display unit and the backlight unit (BLU) is coupled to the LED display unit, characterized in that the through-holes are formed in the body case of the point corresponding to the position where the LED is installed. The method of claim 1, wherein the LCD module: Products including notebook computers, mobile phones, MP3 players, personal digital assistants (PDAs), portable multimedia players (PMPs), ultra mobile PCs (UMPCs), portable computers (PMPCs), web pads, digital cameras, digital watches LCD module coupled to the LED display unit and the backlight unit (BLU), characterized in that used in any one of the products. In the LCD module, A mold frame accommodating and fixing the lamp assembly, the reflector, the light guide plate, and the optical sheets sequentially, and having a plurality of through holes formed at one side and the other side thereof; An LCD panel mounted on the optical sheets and displaying an image; A bottom case installed below the mold frame; A top case assembled with the bottom case to fix the mold frame and the LCD panel, and having a plurality of functional buttons on an outer circumference of the LCD panel; And The LED display unit and the backlight unit (BLU) are coupled between the top case and the LCD panel, the LED array having a plurality of LEDs emitting light with the functional buttons of the top case. LCD module. The method of claim 7, wherein the LCD module: An LCD coupled to the LED display unit and the backlight unit (BLU), further comprising a touch screen installed on the mold frame and the LCD panel and having a functional button at a point corresponding to the position where the LED is installed. module. The method of claim 7, wherein the LCD module: And an LED display unit and a backlight unit (BLU) further comprising an LED array FPCB for wiring connection to the lower part of the LED array. The method of claim 7, wherein the LCD module: An LCD display coupled to the LED display unit and the backlight unit (BLU), comprising: a plurality of LEDs installed on the lamp assembly and emitting light to the functional button of the top case through the through-hole of the mold frame. . The method of claim 7, wherein the LCD module: Products including notebook computers, mobile phones, MP3 players, personal digital assistants (PDAs), portable multimedia players (PMPs), ultra mobile PCs (UMPCs), portable computers (PMPCs), web pads, digital cameras, digital watches LCD module coupled to the LED display unit and the backlight unit (BLU), characterized in that used in any one of the products. delete

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