Semiconductor display device correcting system and correcting method of semiconductor display device

• US 20020079484A1
• Filed: 12/28/2001
• Published: 06/27/2002
• Est. Priority Date: 09/03/1997
• Status: Abandoned Application

• Current Assignee: Jun Koyama, Shunpei Yamazaki
• Original Assignee: Jun Koyama, Shunpei Yamazaki
• Inventors: Koyama, Jun, Yamazaki, Shunpei
• Application Number:
  US10/028,276
• Publication Number:
  US 20020079484A1
• Time in Patent Office: Days
• US Class Current: 257/10
• CPC Class Codes: G09G 2300/0408 Integration of the drivers onto the display substrate
• CPC Class Codes: G09G 2310/027 Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
• CPC Class Codes: G09G 2320/0276 for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
• CPC Class Codes: G09G 2320/0693 Calibration of display systems
• CPC Class Codes: G09G 3/001 using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background slide projectors per se G03B23/00 = 42 HP
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence
• CPC Class Codes: G09G 3/3688 suitable for active matrices only
• CPC Class Codes: G09G 3/3696 Generation of voltages supplied to electrode drivers
• CPC Class Codes: G11C 16/0433 comprising cells containing a single floating gate transistor and one or more separate select transistors
• CPC Class Codes: H01L 29/66757 Lateral single gate single channel transistors with non-inverted structure, i.e. the channel layer is formed before the gate
• CPC Class Codes: H01L 29/78621 with LDD structure or an extension or an offset region or characterised by the doping profile
• CPC Class Codes: H01L 29/78636 with supplementary region or layer for improving the flatness of the device
• CPC Class Codes: H01L 29/78675 with normal-type structure, e.g. with top gate

Abstract

A semiconductor display device correcting system includes a control circuit for carrying out gamma correction of a picture signal supplied from the outside and a nonvolatile memory for storing data for gamma correction. The data for gamma correction is prepared for each semiconductor display device, so that excellent gradation display can be made.

Claims

1. An electronic device comprising a nonvolatile memory,

wherein the nonvolatile memory comprises a memory element, and

wherein the memory element comprises a first thin film transistor comprising a floating gate and a second thin film transistor.

5. An electronic device according to claim 1, wherein the floating gate, and a gate electrode of the second thin film transistor comprise the same material.

7. An electronic device according to claim 1, wherein a source electrode and a drain electrode of the memory element comprise the same material as that of a gate electrode of the first thin film transistor.

9. An electronic device according to claim 1, wherein each of the first thin film transistor and the second thin film transistor comprises a semiconductor layer comprising a source region, a drain region, a low concentration impurity region, and a channel region.

13. An electronic device according to claim 1, wherein the first thin film transistor is a p-channel FAMOS type thin film transistor and the second thin film transistor is an n-channel switching thin film transistor.

17. An electronic device according to claim 1, wherein the electronic device is one of the group consisting of a projection display system, a video camera, a still camera, a head mount display, a car navigation system, a personal computer, a portable information terminal.

2. An electronic device comprising a nonvolatile memory,

wherein the nonvolatile memory comprises a memory element,

wherein the memory element comprises a first thin film transistor comprising a floating gate and a second thin film transistor, and

wherein a source electrode and a drain electrode of the memory element comprise the same material as that of a gate electrode of the first thin film transistor.

6. An electronic device according to claim 2, wherein the floating gate, and a gate electrode of the second thin film transistor comprise the same material.

10. An electronic device according to claim 2, wherein each of the first thin film transistor and the second thin film transistor comprises a semiconductor layer comprising a source region, a drain region, a low concentration impurity region, and a channel region.

14. An electronic device according to claim 2, wherein the first thin film transistor is a p-channel FAMOS type thin film transistor and the second thin film transistor is an n-channel switching thin film transistor.

18. An electronic device according to claim 2, wherein the electronic device is one of the group consisting of a projection display system, a video camera, a still camera, a head mount display, a car navigation system, a personal computer, a portable information terminal.

3. An electronic device comprising:

a nonvolatile memory; and

a semiconductor display device comprising a pixel region comprising a plurality of pixel thin film transistors,

wherein the nonvolatile memory comprises a memory element,

wherein the memory element comprises a first thin film transistor comprising a floating gate and a second thin film transistor, and

wherein gate electrodes of the plurality of pixel thin film transistors, the floating gate, and a gate electrode of the second thin film transistor comprise the same material.

8. An electronic device according to claim 3, wherein a source electrode and a drain electrode of the memory element comprise the same material as that of a gate electrode of the first thin film transistor.

11. An electronic device according to claim 3, wherein each of the pixel thin film transistors, the first thin film transistor, and the second thin film transistor comprises a semiconductor layer comprising a source region, a drain region, a low concentration impurity region, and a channel region.

15. An electronic device according to claim 3, wherein the first thin film transistor is a p-channel FAMOS type thin film transistor and the second thin film transistor is an n-channel switching thin film transistor.

19. An electronic device according to claim 3, wherein the electronic device is one of the group consisting of a projection display system, a video camera, a still camera, a head mount display, a car navigation system, a personal computer, a portable information terminal.

4. An electronic device comprising:

a nonvolatile memory; and

a semiconductor display device comprising a pixel region comprising a plurality of pixel thin film transistors,

wherein the nonvolatile memory comprises a memory element,

wherein the memory element comprises a first thin film transistor comprising a floating gate and a second thin film transistor,

wherein gate electrodes of the plurality of pixel thin film transistors, the floating gate, and a gate electrode of the second thin film transistor comprise the same material, and

wherein a source electrode and a drain electrode of the memory element comprise

the same material as that of a gate electrode of the first thin film transistor.

12. An electronic device according to claim 4, wherein each of the pixel thin film transistors, the first thin film transistor, and the second thin film transistor comprises a semiconductor layer comprising a source region, a drain region, a low concentration impurity region, and a channel region.

16. An electronic device according to claim 4, wherein the first type thin film transistor is a p-channel FAMOS type thin film transistor and the second thin film transistor is an n-channel switching thin film transistor.

20. An electronic device according to claim 4, wherein the electronic device is one of the group consisting of a projection display system, a video camera, a still camera, a head mount display, a car navigation system, a personal computer, a portable information terminal.