Method of making a liquid crystal display device having a heat dissipation pattern

• US 8,081,288 B2
• Filed: 01/04/2011
• Issued: 12/20/2011
• Est. Priority Date: 01/26/2006
• Status: Active Grant

• Current Assignee: NLT Technologies, Ltd.
• Original Assignee: NLT Technologies, Ltd.
• Inventors: Yuge, Kazuyuki
• Primary Examiner(s): Briggs, Nathanael R
• Application Number:
  US12/984,168
• Publication Number:
  US 20110097962A1
• Time in Patent Office: 350 Days
• Field of Search: 349/150, 349/151, 349/161, 349/187
• US Class Current: 349/161
• CPC Class Codes: G02F 1/133385 with cooling means, e.g. fans
• CPC Class Codes: G02F 1/1345 Conductors connecting electrodes to cell terminals
• CPC Class Codes: G02F 1/13454 Drivers integrated on the active matrix substrate G02F1/136277 takes precedence
• CPC Class Codes: H05K 1/0203 Cooling of mounted components H05K1/0272 takes precedence
• CPC Class Codes: H05K 3/361 Assembling flexible printed circuits with other printed circuits

Abstract

Disclosed are a liquid crystal display device 10 and a method of making such liquid crystal display device that improves display quality by providing heat dissipation pattern 4 for effectively dissipating heat generated by the driver ICs 2. The heat dissipation pattern 4 is formed on a glass substrate of a liquid crystal panel 1 along one side thereof so as to minimize non-uniform thermal distribution on the liquid crystal panel 1 at locations adjacent to and distant from the driver ICs 2.

Claims

1. A method of making a liquid crystal display device including a generally rectangular liquid crystal panel, driver ICs for driving the liquid crystal panel and a circuit board for carrying a driving circuit for supplying driving signals to the driver ICs, comprising the steps of:

forming an array and discrete heat dissipation patterns that are spaced from each other on a glass substrate of the liquid crystal panel;

connecting the circuit board to at least one side of the glass substrate of the liquid crystal panel; and

mounting the driver ICs along the one side of the glass substrate of the liquid crystal panel in such a manner that a first of the heat dissipation patterns is located at a first side of one of the driver ICs and a second of the heat dissipation patterns is located at an opposite second side of the one of the driver ICs.

2. The method of making a liquid crystal display device of claim 1, wherein the discrete heat dissipation patterns and the array of the liquid crystal panel are formed simultaneously using the same material.

3. The method of making a liquid crystal display device of claim 1, further comprising the step of conducting the heat generated by the driver ICs to the circuit board by way of the discrete heat dissipation patterns.

4. The method of making a liquid crystal display device of claim 1, further comprising the step of applying a fixed potential to the discrete heat dissipation patterns.

5. The method of making a liquid crystal display device of claim 1, further comprising the step of connecting the one of the driver ICs to the discrete heat dissipation patterns.

6. The method of making a liquid crystal display device of claim 1, further comprising the step of connecting the discrete dissipation patterns to the circuit board.

7. The method of making a liquid crystal display device of claim 1, further comprising the step of connecting the driver ICs to the circuit board.

8. The method of making a liquid crystal display device of claim 1, further comprising the step of forming a wiring pattern under at least one of the discrete dissipation patterns with an insulation layer therebetween.