Liquid crystal display device effective against color irregularity

A semi-transparent type liquid crystal display device comprising

• a first substrate structure including signal lines, thin film transistors selectively connected to said signal lines so as to be selectively changed between on-state for propagating data signals and off-state, reflecting electrodes connected to the associated thin film transistors for receiving said data signals in said on-state and transparent electrodes respectively paired with said reflecting electrodes and connected to said associated thin film transistors for receiving said data signals in said on-state;
• a second substrate structure including a counter electrodes opposed to the pairs of reflecting and transparent electrodes for creating local electric fields;
• and
• a liquid crystal layer confined between said first substrate and said second substrate, and applied with a minimum potential difference and a maximum potential difference between said pairs of reflecting and transparent electrodes and said counter electrode for partially becoming transparent in the presence of said local electric fields,
• the liquid crystal molecules of said liquid crystal layer between said reflecting electrodes and said counter electrode and between said transparent electrodes and said counter electrode being oriented in a direction inclined from both of the horizontally oriented state and the vertically oriented state by a certain angle equal to or greater than 10 degrees in the presence of one of said minimum and maximum potential differences.

A semi-transparent type liquid crystal display device comprising:

• two substrate structures selectively formed with electrodes and having reflecting regions for reflecting light incident thereonto and transparent regions for passing back light;
• and
• a liquid crystal layer confined in a space between said two substrate structures, and selectively applied with a minimum potential difference and a maximum potential difference so as to be locally changed between transparent state and non-transparent state for producing a color visual image,
• a gap in said transparent regions and one of said minimum and maximum potential differences being determined in such a manner that a reflectance of said liquid crystal layer to one of the red, green and blue light components has an extreme value.