Light emitting apparatus, display apparatus, photoelectric conversion apparatus, electric equipment, illumination apparatus, mobile body, wearable device, and image forming apparatus

Abstract

A light emitting apparatus is provided. The light emitting apparatus in which a pixel, that comprises a current path including a light emitting element, a driving transistor configured to supply a current corresponding to a luminance signal to the light emitting element, and a light emission control transistor configured to control light emission or non-light emission of the light emitting element, is arranged. In the current path, the light emission control transistor is arranged between the light emitting element and the driving transistor, and a withstand voltage of the driving transistor is lower than a withstand voltage of the light emission control transistor.

What is claimed is: 
     
         1 . A light emitting apparatus in which a pixel, that comprises a current path including a light emitting element, a driving transistor configured to supply a current corresponding to a luminance signal to the light emitting element, and a light emission control transistor configured to control light emission or non-light emission of the light emitting element, is arranged, wherein
 in the current path, the light emission control transistor is arranged between the light emitting element and the driving transistor, and   a withstand voltage of the driving transistor is lower than a withstand voltage of the light emission control transistor.   
     
     
         2 . The apparatus according to  claim 1 , further comprising
 a light emission control circuit configured to supply, to a control terminal of the light emission control transistor, a light emission control signal for controlling light emission or non-light emission of the light emitting element,   wherein a withstand voltage of a transistor arranged in the light emission control circuit is lower than the withstand voltage of the light emission control transistor.   
     
     
         3 . The apparatus according to  claim 2 , wherein
 a difference between the withstand voltage of the driving transistor and the withstand voltage of the transistor arranged in the light emission control circuit is smaller than a difference between the withstand voltage of the driving transistor and the withstand voltage of the light emission control transistor.   
     
     
         4 . The apparatus according to  claim 3 , wherein
 the withstand voltage of the driving transistor is equal to the withstand voltage of the transistor arranged in the light emission control circuit.   
     
     
         5 . The apparatus according to  claim 1 , wherein
 the light emission control transistor comprises a drain offset structure.   
     
     
         6 . The apparatus according to  claim 1 , wherein
 the light emission control transistor comprises a LOCOS offset structure.   
     
     
         7 . The apparatus according to  claim 1 , wherein
 a cascode transistor configured to control a potential of a drain of the driving transistor is further arranged between the driving transistor and the light emission control transistor in the current path, and   a withstand voltage of the cascode transistor is lower than the withstand voltage of the light emission control transistor.   
     
     
         8 . The apparatus according to  claim 7 , wherein
 a difference between the withstand voltage of the driving transistor and the withstand voltage of the cascode transistor is smaller than a difference between the withstand voltage of the driving transistor and the withstand voltage of the light emission control transistor.   
     
     
         9 . The apparatus according to  claim 8 , wherein
 the withstand voltage of the driving transistor is equal to the withstand voltage of the cascode transistor.   
     
     
         10 . The apparatus according to  claim 7 , further comprising
 a bias circuit configured to supply a bias signal to a control terminal of the cascode transistor,   wherein a withstand voltage of a transistor arranged in the bias circuit is lower than the withstand voltage of the light emission control transistor.   
     
     
         11 . The apparatus according to  claim 10 , wherein
 a difference between the withstand voltage of the driving transistor and the withstand voltage of the transistor arranged in the bias circuit is smaller than a difference between the withstand voltage of the driving transistor and the withstand voltage of the light emission control transistor.   
     
     
         12 . The apparatus according to  claim 11 , wherein
 the withstand voltage of the driving transistor is equal to the withstand voltage of the transistor arranged in the bias circuit.   
     
     
         13 . The apparatus according to  claim 1 , further comprising
 a signal output circuit configured to supply the luminance signal to a control terminal of the driving transistor,   wherein a withstand voltage of a transistor arranged in the signal output circuit is lower than the withstand voltage of the light emission control transistor.   
     
     
         14 . The apparatus according to  claim 13 , wherein
 a difference between the withstand voltage of the driving transistor and the withstand voltage of the transistor arranged in the signal output circuit is smaller than a difference between the withstand voltage of the driving transistor and the withstand voltage of the light emission control transistor.   
     
     
         15 . The apparatus according to  claim 14 , wherein
 the withstand voltage of the driving transistor is equal to the withstand voltage of the transistor arranged in the signal output circuit.   
     
     
         16 . The apparatus according to  claim 1 , wherein
 the withstand voltage of the light emission control transistor is the highest among the transistors included in the apparatus.   
     
     
         17 . The apparatus according to  claim 1 , wherein
 the apparatus comprises a substrate and a plurality of pixels including the pixel on the substrate, and the plurality of pixels are arranged along a longitudinal direction of the substrate.   
     
     
         18 . A display apparatus comprising
 the light emitting apparatus according to  claim 1 ; and   an active element connected to the light emitting apparatus.   
     
     
         19 . A photoelectric conversion apparatus comprising:
 an optical unit comprising a plurality of lenses;   an image sensor configured to receive light having passed through the optical unit; and   a display unit configured to display an image,   wherein the display unit displays an image captured by the image sensor, and comprises the light emitting apparatus according to  claim 1 .   
     
     
         20 . An electric equipment comprising:
 a housing provided with a display unit; and   a communication unit provided in the housing and configured to communicate with the outside,   wherein the display unit comprises the light emitting apparatus according to  claim 1 .   
     
     
         21 . An illumination apparatus comprising a light source and at least one of a light diffusion unit and an optical film, wherein
 the light source comprises the light emitting apparatus according to  claim 1 .   
     
     
         22 . A mobile body comprising a body and a lighting unit provided in the body, wherein
 the lighting unit comprises the light emitting apparatus according to  claim 1 .   
     
     
         23 . A wearable device comprising a display apparatus configured to display an image, wherein
 the display apparatus comprises the light emitting apparatus according to  claim 1 .   
     
     
         24 . An image forming apparatus comprising:
 a photosensitive member;   an exposure light source configured to expose the photosensitive member;   a developing device configured to apply a developing agent to the exposed photosensitive member; and   a transfer device configured to transfer an image developed by the developing device to a print medium,   wherein the exposure light source comprises the light emitting apparatus according to  claim 1 .