TWI334505B - Back light module and flat panel display incorporating the same - Google Patents

Description

1334505

达达编号号: TW2735PA IX. Description of the Invention: [Technical Field] The present invention relates to a backlight module and a flat panel display using the same, and more particularly to a light sensing component fixedly disposed with a positioning member The backlight module of the flexible circuit board and the flat display using the same. [Prior Art] In the conventional backlight module, after detecting the brightness of the lamp of the backlight module, the light sensor generates a signal and is rotated by a connector: a controller of the circuit (controller) ). After the controller receives the electrical signal, the control circuit adjusts the brightness of the lamp. The photo sensor and the connector are disposed on a printed circuit board (PCB). The printed circuit board is fixed to the appropriate position in the backlight module by means of a screw, for example, screwed to the side of the plastic frame. However, the use of screws to secure printed circuit boards is extremely labor intensive and time consuming, thereby increasing assembly time and increasing cost. Therefore, how to reduce assembly time to save costs is the current goal of the industry. SUMMARY OF THE INVENTION In view of the above, the object of the present invention is to provide a backlight module and a flat panel display using the same. Fixing the flexible circuit board of the Caoguwei light-sensing sensing component to the support frame of the backlight module by using the positioning member p _ ^ ^ ^, thereby eliminating the assembly time-consuming screw design and improving the stacking efficiency, Save time and reduce

Claims (1)

1334505 99.9. (10) j year and month repair (more) is being replaced ^ 10, the scope of application for patent: 1. A backlight module, comprising: at least one light source; a control circuit electrically connected to the light source to drive the light source; a supporting frame having a light guiding structure, an accommodating space and an outer side surface, wherein the accommodating space is for accommodating the light source, and the light guiding structure is for guiding the light emitted by the light source; An optical sheet is fixed on the support frame, and part of the light emitted by the light source is emitted through the optical sheet; a positioning member is disposed on the outer surface; a flexible circuit board, the flexible circuit One end of the board is coupled to the positioning member to be fixed on the outer surface, the other end of the flexible circuit board is electrically connected to the control circuit; and a light sensing component is disposed on the flexible circuit board. For sensing the light transmitted by the light guiding structure, and outputting a feedback signal to the control circuit by the flexible circuit board, so that the control circuit adjusts the brightness of the light source correspondingly, wherein The locating member includes at least one guiding slot, the flexible circuit board has at least one edge, the at least one edge is coupled to the at least one guiding slot, the positioning component further comprises at least one positioning post, and the flexible circuit board has at least one a recess, the at least one positioning post being located in the at least one recess. 2. The backlight module of claim 1, wherein the flexible circuit board has a first edge, a second edge, and a third edge, the first edge and the third edge being substantially perpendicular to The second edge, the recess 1334550 is formed on the first edge, and the first edge and the second edge are fitted into the guide groove. The positioning post is located in the concave portion. The flexible circuit board is fixed to the outer side surface. 3. The money group as described in the scope of claim 2, wherein the bit member comprises a -th guide groove, a second guide groove, a first positioning post and a second positioning post, the flexible circuit board has a first edge, a second edge, a third edge, a first notch and a second notch, the first edge and the second edge are substantially perpendicular to the second edge, the first concave The mouth and the two notches are respectively formed on the first edge and the second edge, and the second edge and the third edge are respectively fitted in the first guiding groove and the second guiding groove respectively. The recording and the second positioning post are respectively located on the first notch and the second concave yoke so that the flexible circuit board m is positioned on the outer side surface. 4. The backlight module as claimed in claim 帛j, wherein the gift box is a stomach plate and a plastic frame, and the frame is disposed above the back plate to fix the optical sheet. The backboard has the accommodating space. The backboard has a bottom plate and a plurality of sidewalls. The bottom plate has an upper surface and a lower surface. The light source is located on the upper surface, and the outer surface includes at least the lower surface and the sidewalls. The locating member is disposed on the lower surface, the outer side surfaces of the side walls, or the outer side surface of the plastic frame. -5. The backlight module of claim 2, wherein the light guide, the light guide. Constructing a stomach perforation, the through hole is connected to the accommodating space and the outer surface 'the light sensing element is facing the through hole to sense the through 1334550, ·' ^-aa--- C month The backlight module of claim 1, wherein the light structure is a light pipe, and the population is facing the light pipe. Light = one side of the sheet 'The field measuring element is facing the light of the light pipe, and the light transmitted from the light pipe is measured. A, 7. If you want to use the full line, the first item Wei Zhibei pure The group, wherein the light sensing element comprises a sensing body and a controller, the device can be combined into a composite wafer, and the planar display comprises: a display panel; and a backlight of the display panel The backlight module is provided with a backlight module for providing the display group comprising: at least one light source; a control circuit electrically connecting the light source to the light source; and a support frame having a light guiding structure and a capacitance a space and an outer surface 'the accommodation' is for accommodating the light source, the light guide The structure is used to guide a portion of the light emitted by the light source; an optical sheet is fixed on the support frame, and part of the light emitted by the light source is emitted through the optical sheet; Is disposed on the outer surface; a flexible circuit board, the end of the flexible circuit board is connected to the positioning member to be fixed on the outer surface, and the other end of the flexible circuit board is electrically connected to the control circuit And a light sensing component is disposed on the flexible circuit board for sensing 99: 9.* UB ...... — 4 •. 匕.封史成杂页丨:Ϊ:= The light is accordingly controlled by the control circuit of the soft two light source, so that the control 1 channel correspondingly adjusts the = middle 'the positioning member includes at least the guide groove', the flexible circuit board has a ^ ^ ^ edge, The at least one edge is coupled to the at least one guiding slot, and the j-clamping member further comprises at least a positioning post, the flexible circuit board further has at least a notch, and the at least one positioning post is located in the at least one notch. a flat panel display as described in claim 8 of the patent application, The circuit board has a first edge, a second edge, and a third edge, and the first edge and the third edge are perpendicular to the second edge, and the concave: is formed at the first edge The first edge and the second edge are fitted into the guiding groove, and the positioning post is located in the recess, so that the flexible circuit board is fixed on the outer surface. The flat panel display according to the eighth aspect of the invention, wherein the positioning device comprises a first guiding slot, a second guiding slot, a first positioning post and a second positioning post, the flexible circuit board having a first edge a second edge, a third edge, a first notch and a second notch, the first edge and the third edge are substantially perpendicular to the second edge, the first notch and the first a notch is formed on the first edge and the second edge, and the first edge and the third edge are respectively fitted in the first guiding groove and the second guiding groove. The third positioning pillars are respectively located in the first recess and the second recess, so that the flexible circuit board is fixed to the outer surface table On. 11. The flat panel display as claimed in claim 8, wherein 133405 99.-^: 09 ---- • ^ Shi Zhi L faints the support frame including - the back plate and the - frame, the glue The frame is disposed on the back plate, and is configured to fix the optical sheet. The back plate has the receiving space. The back plate has a bottom plate and a plurality of side walls. The bottom plate has an upper surface and a lower surface. The light source has a light source. On the upper surface, the outer surface includes: a lower surface, an outer side surface of the side wall, and an outer side surface of the plastic frame. The positioning is: disposed on the lower surface, on the outer side of the side walls, or outside On the side. The flat-panel display of claim 8, wherein the light guiding structure is a continuous perforation, the through hole is connected to the receiving space and the surface, and the light sensing element faces the through hole. The light transmitted by the perforation of the shell. The flat display of claim 8, wherein the structure is a light pipe, and one of the light pipes has an entrance facing the light, and the light sensing element faces the The light pipe is _ to sense the light transmitted from the light pipe. ’ 20