Flat panel display apparatus with grounded PCB

• US 7,365,812 B2
• Filed: 12/30/2003
• Issued: 04/29/2008
• Est. Priority Date: 12/30/2002
• Status: Expired due to Fees

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Sang-Duk
• Primary Examiner(s): Schechter; Andrew
• Assistant Examiner(s): Nguyen; Lauren
• Application Number:
  US10/747,672
• Publication Number:
  US 20040257515A1
• Time in Patent Office: 1,582 Days
• Field of Search: 349 58- 60, 349149-152
• US Class Current: 349/60
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels

Abstract

A flat panel display apparatus comprises a flat panel display module; a control PCB placed in one rear edge area of the flat panel display module and having a conductive grounding part; and a grounding contact member including a rear contact part contacting the grounding part of the control PCB, and a side contact part bent from the rear contact part and contacting one edge of the flat panel display module, and grounding the control PCB. With this configuration, the present invention provides a flat panel display apparatus in which a control PCB having the length shorter than the width of a flat panel display module is easily grounded and the production cost thereof is decreased.

Claims

1. A flat panel display apparatus comprising:

a flat panel display module comprising a mold frame and a chassis having a side part;

a control printed circuit board (PCB) positioned in a rear edge area of the flat panel display module and having a conductive grounding part, the control PCB having the length shorter than the width of the flat panel display module and being placed in an approximate middle portion of the rear edge area of the flat panel display module;

a PCB cover positioned adjacent the control PCB, said control PCB being positioned between the PCB cover and the mold frame, wherein said PCB cover comprises a grounding hole exposing the conductive grounding part of the control PCB; and

a grounding contact member positioned adjacent the PCB cover opposite the control PCB, said grounding contact member including a rear contact part contacting the conductive grounding part of the control PCB from outside the PCB cover through the grounding hole, and a side contact part bent from the rear contact part and contacting the side part of the chassis, said grounding contact member grounding the control PCB.

2. The flat panel display apparatus according to claim 1, wherein the grounding contact member comprises a conductive foil material.

3. The flat panel display apparatus according to claim 1, wherein the grounding contact member is attached to the conductive grounding part of the control PCB by an adhesive.

4. The flat panel display apparatus according to claim 1, wherein the PCB cover includes a rear covering part covering the control PCB, and a side combining part bent from the PC3 rear covering part and coupled to the side part of the chassis.

5. The flat panel display apparatus according to claim 4, wherein the side combining part of the PCB cover includes an opening through which the side contact part contacts the side part of the chassis.

6. The flat panel display apparatus according to claim 1, wherein a supporting rib is formed on a rear surface of the mold frame, said supporting rib protruding from the rear surface of the mold frame toward the control PCB and supporting at least a portion of the circumference of the control PCB so as to leave a space between the control PCB and the rear surface of the mold frame.

7. The flat panel display apparatus according to claim 6, wherein an edge area of the control PCB is formed with a supporting hole, and

the supporting rib includes a supporting boss protruding toward the control PCB and received in the supporting hole of the control PCB.

8. A liquid crystal display (LCD) comprising:

an LCD panel having a substrate on which a LCD driver integrated chip (IC) is mounted;

a backlight assembly provided in the rear of the LCD panel and illuminating the LCD panel;

a mold frame;

a chassis coupled to the mold frame and combined to the backlight assembly so as to surround front edges of the LCD display panel and side parts of the backlight assembly;

a control printed circuit board (PCB) positioned in a rear edge area of the backlight assembly and having a conductive grounding part, the control PCB being shorter than the width of the backlight assembly, and being placed in an approximate middle portion of the rear edge area of the backlight assembly;

a flexible printed circuit (FPC) connecting the LCD driver IC with the control PCB;

a PCB cover positioned adjacent the control PCB, said control PCB being positioned between the PCB cover and the mold frame, wherein said PCB cover comprises a grounding hole exposing the conductive grounding part of the control PCB; and

a grounding contact member positioned adjacent the PCB cover opposite the control PCB, said grounding contact member including a rear contact part contacting the conductive grounding part of the control PCB from outside the PCB cover through the grounding hole, and a side contact part bent from the rear contact part and contacting a side part of the chassis, said grounding contact member grounding the control PCB.

9. The LCD according to claim 8, wherein the FPC is shorter than the width of the backlight assembly, and is connected to the control PCB in an approximate middle portion of the edge area of the LCD panel.

10. The LCD according to claim 9, wherein the backlight assembly comprises a light guide plate placed in the rear of the LCD panel and a lamp unit illuminating the light guide plate, wherein the mold frame is combined with the chassis so as to accommodate and support the light guide plate and the lamp unit, and

the control PCB is placed in one rear edge area of the mold frame.

11. The LCD according to claim 8, wherein the grounding contact member comprises a conductive foil material.

12. The LCD according to claim 8, wherein the grounding contact member is attached to the conductive grounding part of the control PCB by an adhesive.

13. The LCD according to claim 8, wherein the PCB cover includes a rear covering part covering the control PCB, and a side combining part bent from the rear covering part and coupled to the side part of the chassis.

14. LCD according to claim 13, wherein the side combining part of the PCB cover includes an opening through which the side contact part contacts the side part of the chassis.

15. The LCD according to claim 8, wherein a supporting rib is formed on a rear surface of the mold frame, said supporting rib protruding from the rear surface of the mold frame toward the control PCB and supporting at least a portion of the circumference of the control PCB so as to leave a space between the control PCB and the rear surface of the mold frame.

16. The LCD according to claim 15, wherein an edge area of the control PCB is formed with a supporting hole, and

the supporting rib includes a supporting boss protruding toward the control PCB and received in the supporting hole of the control PCB.