Image display device

• US 7,423,623 B2
• Filed: 02/23/2005
• Issued: 09/09/2008
• Est. Priority Date: 09/20/1995
• Status: Expired due to Fees

• Current Assignee: Panasonic Liquid Crystal Display Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Hitachi, Ltd.
• Inventors: Mikami, Yoshiro, Akimoto, Hajime, Hiraki, Mitsuru, Akioka, Takashi, Kaneko, Yoshiyuki, Nakahara, Hitoshi, Tsumura, Makoto
• Primary Examiner(s): Liang; Regina
• Application Number:
  US11/062,824
• Publication Number:
  US 20050151729A1
• Time in Patent Office: 1,294 Days
• Field of Search: 345 87-100, 345/204, 348/518, 348/581
• US Class Current: 345/98
• CPC Class Codes: G06F 3/147 using display panels
• CPC Class Codes: G09G 2300/0814 used for selection purposes, e.g. logical AND for partial update
• CPC Class Codes: G09G 2310/04 Partial updating of the display screen
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

An image display displays image data on an image display part constructed by a display pixel array. In an image display in which image data input means for inputting image data so that the display pixel array has two neighboring areas having different frame rates (>0) is provided or image data is displayed on an image display part constructed by a display pixel array, there is provided image data input means which can input at least one moving image data and at least one still image data into the image display part at different frame rates (>0). A high precision image display can be realized hardly changing a display pixel rewriting speed. A moving image signal output circuit and a still image signal output circuit output image data to the display pixel array, and they are provided as circuit configurations independent of each other.

Claims

1. An image display which displays image data on an image display part constructed by a display pixel array, wherein a moving image signal output circuit and a still image signal output circuit which output image data to said display pixel array via a plurality of signal lines are provided as circuit configurations independent of each other, said moving image signal output circuit generates a signal voltage to be inputted to each of display pixels in said display pixel array based on moving image data, said still image signal output circuit generates a signal voltage to be inputted to each of display pixels in said display pixel array based on still image data, and each of said display pixels in said display pixel array is configured to be selectively coupled to receive the signal voltage of said moving image signal output circuit and said still image signal output circuit via a common signal line of said plurality of signal lines.

2. An image display according to claim 1, wherein said moving image signal output circuit and said still image signal output circuit are configured to accept said image data in digital form.

3. An image display terminal employing the image display according to claim 1, wherein said moving image signal output circuit and said still image signal output circuit are configured to accept said image data in digital form.

4. An image display according to claim 1, wherein a local-area-selective scanning circuit is provided which is capable of selecting a part of said display pixel array in which one of a moving image and a still image is locally displayed.

5. An image display according to claim 1, wherein a still image data storing circuit is provided which stores still image data.