Display device

• US 9,905,169 B2
• Filed: 09/22/2014
• Issued: 02/27/2018
• Est. Priority Date: 09/24/2013
• Status: Active Grant

• Current Assignee: Sakai Display Products Corporation (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sakai Display Products Corporation (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Kobayashi, Ryota
• Primary Examiner(s): Eisen, Alexander
• Assistant Examiner(s): Teshome, Kebede
• Application Number:
  US15/022,761
• Publication Number:
  US 20160225324A1
• Time in Patent Office: 1,254 Days
• Field of Search: None
• CPC Class Codes: G02B 6/00 Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
• CPC Class Codes: G02B 6/0083 Details of electrical connections of light sources to drivers, circuit boards, or the like
• CPC Class Codes: G02B 6/0088 of the light guide or other optical sheets in the package
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence
• CPC Class Codes: H04N 5/57 Control of contrast or brightness
• CPC Class Codes: H04N 5/645 Mounting of picture tube on chassis or in housing

Abstract

Provided is a display device capable of implementing a small size thereof by reducing a size of a frame and capable of implementing low cost. A source control circuit is formed integrally with a substrate being provided to a backlight frame and mounting a light-emitting diode. The substrate performs a function as a substrate for the light-emitting diode and a function as a substrate for the source control circuit. Since both functions are configured to be performed in one substrate, a frame area may be narrow, and a small-sized display device may be implemented.

Claims

1. A display device, comprising:

a display panel displaying an image on a front surface of the display panel;

a light guide plate allowing light entering from a side surface of the light guide plate to be emitted toward the display panel from a main surface facing a back surface of the display panel;

a light source emitting light toward the side surface of the light guide plate;

a substrate at which the light source mounted on a front surface of the substrate is disposed so as to face the side surface of the light guide plate;

a display control unit, which has a control circuit controlling image display of the display panel, is formed integrally with the substrate, and extends from one end portion of the substrate to a periphery of the front surface of the display panel; and

a chassis which extends on the outside of the one end portion of the substrate and in a thickness direction of the substrate, and retains the display panel at a periphery of the back surface of the display panel,

wherein the display control unit and the chassis cross each other, and

a first hole for inserting the display control unit is formed in the chassis.

2. The display device according to claim 1,

wherein a connector for inputting an input signal to the display control unit and a driving signal of the light source is provided in the substrate.

3. The display device according to claim 2,

wherein the substrate has a T shape in which a protrusive portion is provided at a center of the other end portion opposite to the one end portion, and the connector is provided to the protrusive portion of the substrate.

4. The display device according to claim 3, further comprising

a frame which supports a surface of the light guide plate opposite to the main surface, and extends to a back surface of the substrate,

wherein the protrusive portion of the substrate and the frame cross each other, and

a second hole for inserting the protrusive portion of the substrate is formed in the frame.

5. The display device according to claim 1,

wherein an image is configured to be displayed on the display panel in an active matrix driving method, and the display control unit is a source control circuit or a gate control circuit.

6. The display device according to claim 1,

wherein the display control unit includes a plurality of units, and

a plurality of the first holes each of which inserts each of the plurality of units are formed in the chassis.

7. The display device according to claim 3,

wherein the substrate is formed in a rectangular shape whose longitudinal direction is a direction along the one end portion and the other end portion, and

a plurality of the light sources are mounted on the front surface of the substrate along the longitudinal direction of the substrate.